The right exhaust bolt spring kit keeps exhaust flanges tight, resists heat, and prevents leaks for years.
These kits come in M8 and M10 sizes and often include studs, springs, nuts, and gaskets for a ready-to-install solution.
Choose coated or stainless spring steel and match thread pitch and stud length for proper fit.
Avoid common fitment mistakes so flanges seal correctly and parts last longer.
| M8x1.25 Exhaust Bolts & Nuts Kit (Universal) |
| Best Fitment Range | Thread size / Pitch: M8 x 1.25 | Kit contents (bolts/studs, springs, nuts): 2 studs, 2 springs, 2 nuts | Material / construction: Quality iron (studs), high-temperature resistant | VIEW LATEST PRICE | Read Our Analysis |
| AP Exhaust 4678 Exhaust Manifold Bolt and Spring Kit |
| Trusted Brand | Thread size / Pitch: (not explicitly listed) — exhaust manifold bolts (standard sizes; assume common M8/M10 class)* | Kit contents (bolts/studs, springs, nuts): Exhaust bolts and springs kit (replacement bolts & springs) — contents listed as kit | Material / construction: Machined/metal (automotive-grade) | VIEW LATEST PRICE | Read Our Analysis |
| Exhaust Manifold Bolts and Nuts Kit (M10x1.5) |
| High-Temperature Steel | Thread size / Pitch: M10 x 1.5 | Kit contents (bolts/studs, springs, nuts): 2 bolts, 2 nuts, 2 washers, 2 springs | Material / construction: High-quality steel | VIEW LATEST PRICE | Read Our Analysis |
| M10x1.25 Exhaust Bolt Nut & Spring Kit |
| Heavy-Duty Strength | Thread size / Pitch: M10 x 1.25 | Kit contents (bolts/studs, springs, nuts): 2 bolts, 2 springs, 2 nuts, 2 gaskets | Material / construction: Premium carbon steel | VIEW LATEST PRICE | Read Our Analysis |
| Zipelo Car Exhaust Spring Bolt and Nut Kit | Corrosion-Resistant | Thread size / Pitch: M10 x 1.25 | Kit contents (bolts/studs, springs, nuts): Bolts & nuts kit (implies bolts, nuts, springs) — M10x1.25 standard | Material / construction: Carbon steel with protective coating | VIEW LATEST PRICE | Read Our Analysis | |
| Dorman Exhaust Bolt and Spring Kit (2 Springs 2 Studs) |
| OE Replacement | Thread size / Pitch: (matches OE; specific pitch not listed)* | Kit contents (bolts/studs, springs, nuts): 2 studs, 2 springs | Material / construction: Hardened steel | VIEW LATEST PRICE | Read Our Analysis |
| Exhaust Bolt and Spring Kit M10-1.5x67mm (4-Pack) | Multi-Pack Value | Thread size / Pitch: M10 x 1.5 | Kit contents (bolts/studs, springs, nuts): 4 bolts, 4 springs, 4 nuts | Material / construction: Mild steel, zinc coated (strength class 10.9) | VIEW LATEST PRICE | Read Our Analysis | |
| Car Exhaust Manifold Bolts Kit M10x1.5 (2PCS) |
| Vibration-Reducing | Thread size / Pitch: M10 x 1.5 | Kit contents (bolts/studs, springs, nuts): 2 studs, 2 nuts, 2 washers, 2 springs | Material / construction: Manganese steel and 45-gauge steel | VIEW LATEST PRICE | Read Our Analysis |
| Walker 36463 Exhaust Bolt and Spring for Chevrolet C1500 |
| Classic Fitment | Thread size / Pitch: (specific pitch not listed)* | Kit contents (bolts/studs, springs, nuts): 1 bolt and 1 spring (Walker single-style replacement for specific application) | Material / construction: High-quality durable metal (engineered for undercar use) | VIEW LATEST PRICE | Read Our Analysis |
| Exhaust Bolts Nuts & Springs Kit for Multiple Cars |
| Warranty-Backed | Thread size / Pitch: M8 x 1.25 | Kit contents (bolts/studs, springs, nuts): 2 bolts, 2 springs, 2 nuts | Material / construction: High-quality iron, zinc finish | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
M8x1.25 Exhaust Bolts & Nuts Kit (Universal)
Should you want a simple, reliable fix for a loose exhaust flange, the M8x1.25 Exhaust Bolts and Nuts Kit is a great choice for DIYers and mechanics who need a strong, heat-resistant solution that fits many cars. You’ll get two M8x1.25 studs, two springs, and two nuts sized to match common OEM references like 35129 and ES491. The iron studs resist rust and stay stable under high heat so your gasket seals better and your exhaust won’t leak. Check fitment for Acura, Honda, BMW and others before you buy. You’ll feel confident installing this durable, practical kit.
- Thread size / Pitch:M8 x 1.25
- Kit contents (bolts/studs, springs, nuts):2 studs, 2 springs, 2 nuts
- Material / construction:Quality iron (studs), high-temperature resistant
- High-temperature / corrosion resistance:Rust resistant, stable at high temperature
- Purpose / function:Secure exhaust flange/manifold, seal gaskets
- Fit/compatibility guidance:Vehicle compatibility list provided (Honda, Acura, BMW, etc.); verify model/year/size
- Additional Feature:Includes OEM reference numbers
- Additional Feature:Stud top diameter specified
- Additional Feature:Spring and nut measurements
AP Exhaust 4678 Exhaust Manifold Bolt and Spring Kit
Should you’re looking for a reliable, ready-to-install exhaust manifold bolt and spring kit that fits many common cars, the AP Exhaust 4678 is a solid pick that’s made to hold up and make your job easier. You’ll find machined, round parts that match many car applications, and you’ll appreciate the clear sizing and sturdy feel whenever you handle the kit. It ships in compact packaging, weighs about two pounds, and has been available since 2007. You’ll get simple replacement bolts and springs that install without fuss, and you’ll have Amazon return support provided that needed.
- Thread size / Pitch:(not explicitly listed) — exhaust manifold bolts (standard sizes; assume common M8/M10 class)*
- Kit contents (bolts/studs, springs, nuts):Exhaust bolts and springs kit (replacement bolts & springs) — contents listed as kit
- Material / construction:Machined/metal (automotive-grade)
- High-temperature / corrosion resistance:Automotive replacement designed for exhaust environment
- Purpose / function:Replacement exhaust manifold bolts and springs
- Fit/compatibility guidance:Intended for cars; check fit (general exhaust manifold replacement)
- Additional Feature:Manufacturer part number 4678
- Additional Feature:UPC/ASIN provided
- Additional Feature:Amazon return guarantee
Exhaust Manifold Bolts and Nuts Kit (M10x1.5)
Should you want fast, reliable exhaust flange repairs that last, this Exhaust Manifold Bolts and Nuts Kit (M10x1.5) is a great choice for DIYers and mechanics alike. You get two bolts, two nuts, two washers, and two springs made from high quality steel. The M10 x 1.5 threads fit many vehicles, but you should verify thread size initially. The springs absorb vibration and cut stress on fixed parts, so connected components last longer. Installation takes minutes and you’ll feel confident replacing worn hardware. It resists high temperatures and stays strong in harsh conditions, keeping your exhaust secure.
- Thread size / Pitch:M10 x 1.5
- Kit contents (bolts/studs, springs, nuts):2 bolts, 2 nuts, 2 washers, 2 springs
- Material / construction:High-quality steel
- High-temperature / corrosion resistance:High-temperature resistant
- Purpose / function:Fasteners for exhaust flange/manifold connections
- Fit/compatibility guidance:Universal fit where M10 x 1.5 matches; verify thread size
- Additional Feature:Includes washers with kit
- Additional Feature:Color: silver finish
- Additional Feature:Quick installation claim
M10x1.25 Exhaust Bolt Nut & Spring Kit
Should you work on your own car or run a small repair shop and want a reliable, easy-to-fit exhaust fastener, the M10x1.25 Exhaust Bolt, Nut & Spring Kit is a smart pick that’ll save you time and headaches. You get two 75mm M10x1.25 bolts, two nuts, two 45mm springs, and two gaskets. The bolts have a 20.6mm head and springs measure 20mm diameter. Made from premium carbon steel, they resist aging and damage so they last. They fit most vehicles with matching threads, seal ball and socket joints well, and install in minutes for quick exhaust manifold repairs.
- Thread size / Pitch:M10 x 1.25
- Kit contents (bolts/studs, springs, nuts):2 bolts, 2 springs, 2 nuts, 2 gaskets
- Material / construction:Premium carbon steel
- High-temperature / corrosion resistance:Resistant to aging/damage; durable under heat
- Purpose / function:Support exhaust manifold components; secure ball-and-socket joints
- Fit/compatibility guidance:Fits most vehicles where M10 x 1.25 matches
- Additional Feature:Includes two gaskets
- Additional Feature:Bolt head diameter listed
- Additional Feature:Spring larger length (45mm)
Zipelo Car Exhaust Spring Bolt and Nut Kit
Corrosion-Resistant
View Latest PriceShould you want a no-nonsense fix that lasts, the Zipelo Car Exhaust Spring Bolt and Nut Kit is made for DIYers and pros who need strong, reliable hardware for RVs, SUVs, and trucks. You’ll like that it uses carbon steel for high strength and durability, so it resists wear and deformation under stress. The protective coating reduces rust and enhances lifespan. Because threading is M10 x 1.25 and pre-cut, you can screw parts in quickly and fit existing mounts without cutting or grinding. It holds components snugly, prevents rattles, and keeps attachments secure over time so you feel confident.
- Thread size / Pitch:M10 x 1.25
- Kit contents (bolts/studs, springs, nuts):Bolts & nuts kit (implies bolts, nuts, springs) — M10x1.25 standard
- Material / construction:Carbon steel with protective coating
- High-temperature / corrosion resistance:Protective coating reduces rust/corrosion
- Purpose / function:Secure exhaust components; prevent rattling
- Fit/compatibility guidance:Universal fit for most exhaust systems (M10 x 1.25)
- Additional Feature:Protective coating applied
- Additional Feature:Marketed for RV/SUV/truck
- Additional Feature:Pre-cut threads
Dorman Exhaust Bolt and Spring Kit (2 Springs 2 Studs)
At the time you want a fuss-free, durable fix for a loose or noisy exhaust connection, the Dorman Exhaust Bolt and Spring Kit is a great pick for DIYers and mechanics alike. You get two springs and two studs in a kit that matches original equipment bolt diameter, thread pitch, and head type. You can check exact fit by entering your vehicle make, model, and trim into Dorman’s garage tool. The hardened steel parts give confidence they’ll hold up. Dorman tests components extensively, so you can install fresh hardware aware the manifold-to-exhaust connection will stay secure and quiet.
- Thread size / Pitch:(matches OE; specific pitch not listed)*
- Kit contents (bolts/studs, springs, nuts):2 studs, 2 springs
- Material / construction:Hardened steel
- High-temperature / corrosion resistance:Designed for durable, long-lasting service (exhaust conditions)
- Purpose / function:Attach manifold to exhaust system; secure connection
- Fit/compatibility guidance:Matches OE hardware; use vehicle lookup tool to ensure fit
- Additional Feature:Dorman OEM-style part
- Additional Feature:Vehicle fit tool recommended
- Additional Feature:Hardened steel construction
Exhaust Bolt and Spring Kit M10-1.5x67mm (4-Pack)
Multi-Pack Value
View Latest PriceProvided you need a reliable, no-fuss exhaust mounting kit that fits most M10 applications, this 4-pack of M10-1.5x67mm exhaust bolts with springs and nuts is a solid choice for DIYers and professional mechanics alike. You get four bolts, four springs, and four nuts made from zinc coated mild steel with strength class 10.9. Each bolt measures 67 mm in total with 25 mm threaded length, tipping the scales at about 12.3 ounces for the set. You’ll appreciate the clear fitment for M10-1.5 threads, simple installation, and honest packaging from Jxsaboorle. Returns are easy within thirty days provided necessary.
- Thread size / Pitch:M10 x 1.5
- Kit contents (bolts/studs, springs, nuts):4 bolts, 4 springs, 4 nuts
- Material / construction:Mild steel, zinc coated (strength class 10.9)
- High-temperature / corrosion resistance:Zinc coated for corrosion resistance
- Purpose / function:Exhaust mounting/hardware for manifold/exhaust
- Fit/compatibility guidance:General M10-1.5 fit; packaging lists model number (verify)
- Additional Feature:4-piece kit (not 2)
- Additional Feature:Zinc-coated mild steel
- Additional Feature:Strength class 10.9
Car Exhaust Manifold Bolts Kit M10x1.5 (2PCS)
In case you want a simple, reliable fix for exhaust leaks and noisy manifolds, this two-piece M10x1.5 exhaust bolt spring kit is a smart pick that fits many cars and holds up under heat. You get two studs, nuts, washers, and springs so you can replace worn fasteners without buying a full set. The springs absorb shock and compress in high heat to keep gasket pressure steady, and the studs press the gasket for a tight seal. Made from manganese steel and 45-gauge steel, the kit resists heat and vibration. Check the 2.9 inch length and 1.5 mm pitch before you buy.
- Thread size / Pitch:M10 x 1.5
- Kit contents (bolts/studs, springs, nuts):2 studs, 2 nuts, 2 washers, 2 springs
- Material / construction:Manganese steel and 45-gauge steel
- High-temperature / corrosion resistance:High-temperature resistant materials
- Purpose / function:Apply pressure to gasket; prevent leaks; absorb vibration
- Fit/compatibility guidance:Fits most cars where dimensions match; check dimensions
- Additional Feature:Made from manganese steel
- Additional Feature:Thread length specified
- Additional Feature:Shock-absorbing spring design
Walker 36463 Exhaust Bolt and Spring for Chevrolet C1500
You’ll appreciate the Walker 36463 Exhaust Bolt and Spring provided you want a reliable, easy way to keep undercar exhaust parts secure on older Chevrolet and Buick models. You’ll find it fits ball-and-socket joints and supports your catalytic converter and muffler connections. The spring has the right compression strength to hold parts steady while you drive. It’s made from durable materials that resist the harsh undercar environment. Before you buy, use the fit tool and enter year, make, model, engine, and trim, and check qualifier noted near the i icon. That step prevents fit issues and saves time.
- Thread size / Pitch:(specific pitch not listed)*
- Kit contents (bolts/studs, springs, nuts):1 bolt and 1 spring (Walker single-style replacement for specific application)
- Material / construction:High-quality durable metal (engineered for undercar use)
- High-temperature / corrosion resistance:Built to withstand undercar exhaust environment
- Purpose / function:Secure ball-and-socket joint; support muffler/catalyst connections
- Fit/compatibility guidance:Application-specific for certain Chevrolet/Buick models — verify fit
- Additional Feature:Designed for ball-and-socket
- Additional Feature:Specific Buick/Chevy fit
- Additional Feature:Compression-rated spring
Exhaust Bolts Nuts & Springs Kit for Multiple Cars
Provided you’re looking for a reliable, easy-to-install exhaust bolt spring kit that fits a wide range of vehicles, this M8x1.25 set is a strong choice for DIYers and pro mechanics alike. You get two bolts, two springs, and two nuts made of high-toughness iron with zinc finish. It fits Subaru, Acura, Honda, Lexus, Toyota, Mazda, Pontiac, Ford, and Isuzu models, so you won’t worry about compatibility. The hex head bolts thread M8x1.25 and sit in a 1.25 centimeter groove. Installation takes minutes, supports exhaust and ball-and-socket joints, and includes a 24 month or 15,000 mile warranty.
- Thread size / Pitch:M8 x 1.25
- Kit contents (bolts/studs, springs, nuts):2 bolts, 2 springs, 2 nuts
- Material / construction:High-quality iron, zinc finish
- High-temperature / corrosion resistance:Anti-aging, durable, zinc finish
- Purpose / function:Support automobile exhaust parts; ball-and-socket joint use
- Fit/compatibility guidance:Compatible with multiple makes (Subaru, Honda, Toyota, etc.); verify fit
- Additional Feature:Lists multiple interchange numbers
- Additional Feature:Zinc finish noted
- Additional Feature:24-month warranty offered
Factors to Consider When Choosing Exhaust Bolt Spring Kits
Upon choosing an exhaust bolt spring kit, begin checking that the thread size matches your exhaust studs so installation is smooth and secure. Also look at material strength and corrosion resistance together, since a strong, rust-proof metal will last longer under heat and moisture. Don’t forget to compare spring tension ratings and kit completeness so you get the right fit and all the parts you need without surprises.
Thread Size Match
Although it seems small, the thread size on your exhaust studs matters a lot to the fit and seal of the system, so you should check it carefully before buying bolt spring kits. You’ll want to verify the size stamped or measured on the stud, like M8×1.25 or M10×1.5, so the replacement bolts and nuts mate properly. Match both pitch and diameter, since a right diameter with wrong pitch will cross thread and strip parts. Also measure overall stud length and threaded length because correct threads that are too short or too long can stop engagement or hit nearby parts. Confirm whether nuts are fine or coarse metric and use a thread gauge or compare markings whenever unsure to avoid leaks and failures.
Material Strength
Pick bolt and spring materials that won’t fail once the exhaust heats up and the engine vibrates, because you’re trusting those parts to keep the system sealed and safe. Choose high strength steels like carbon or alloy steels rated at or above 800 MPa or grade 10.9 so they resist shear and pull out once the system loads. Make sure the metal and any heat treatment keep strength at 400 to 600 °C common in exhausts. Fatigue resistance matters since springs and studs face repeated thermal cycles and vibration, so pick materials with proven fatigue limits and smooth surface finish to cut crack starts. Also match hardness and ductility between bolt, nut, and spring so threads don’t gall or crack under torque and thermal growth.
Corrosion Resistance
Because exhaust parts sit in heat, moisture, and salt, you’ll want fasteners that actually resist corrosion so your system stays sealed and safe. Choose stainless steel or zinc-coated high-grade carbon steel so rust doesn’t eat the studs, springs, or threads. Look for surface treatments like zinc plating, galvanization, or ceramic coatings that are rated for the high temperatures you see in exhaust systems. Also check that the coating can handle thermal cycling since some platings flake after repeated heating and cooling. Make sure springs and threads get the same protection as studs because rusted springs lose tension and rusted threads make removal and torqueing hard. Should you drive near the coast or use road salt, pick higher-rated materials like 316 stainless or heavy zinc epoxy.
Spring Tension Rating
Start through treating spring tension as the heart of an exhaust flange seal, because the right tension keeps your gasket compressed through heat, vibration, and movement. You want tension high enough to hold a constant clamp across thermal expansion cycles, typically 50 to 250 N depending on size and use. Check the rated load at the installed compression so preload squeezes the gasket without pushing the spring past its elastic limit. Also look at spring rate in N per mm so the spring moves with vibration and heat but does not sag. Match tension to the joint design since heavy manifolds and ball and socket joints need more force, while fragile flanges need less to avoid warping or stud failure. Verify high temperature retention so tension stays near 80 to 90 percent.
Kit Completeness
As you’re getting ready to replace an exhaust flange, a complete kit saves time and stress and keeps you from making a second trip to the parts store. You want kits that include the right counts for your flange, like two studs, two springs, and two nuts for a dual-bolt flange or four of each for larger flanges. Also check for matching washers or gaskets whenever your flange needs sealing parts, because missing seals cause leaks even with correct bolts. Look at stud overall and threaded length so they reach both surfaces without bottoming out or leaving too little engagement. Make sure springs and nuts match the stud thread pitch and diameter to avoid damage. Prefer packages that list quantities and extras like retainers so you can confirm completeness quickly.
Heat Resistance
You’ve just checked kit completeness and now you’ll want to pay close attention to heat resistance, because the wrong metal will fail long before the next service. Whenever you pick fasteners, choose high temperature steel grades like carbon or manganese that keep tensile strength at 600 to 900°C. Also look for coatings that resist thermal cycling without peeling at temperatures above 400°C. Springs should be made from high temperature spring steel or stainless alloy so they don’t relax and lose preload after repeated heating to around 500°C. Check creep and corrosion performance so threads and studs hold clamping force over time. Finally verify material grade, maximum continuous temperature rating, and heat treatment to match your vehicle’s exhaust conditions and driving style.
Fitment Verification
While you’re choosing exhaust bolt spring kits, fit matters more than you could envision, so take a careful, hands-on approach before buying. You’ll start by verifying thread size and pitch, like M8×1.25 or M10×1.5, so the replacement bolts match your studs or flange holes. Next, measure total stud length and threaded length in millimeters or inches and compare them to required clearance and gasket thickness, because springs and nuts must seat correctly. Also confirm bolt diameter and head style fit the flange and the available tool access. Check spring free length and outer diameter against the flange gap, so preload and vibration absorption work without bottoming out. Finally, cross reference your vehicle model year and service manual torque and fastener specs for true compatibility.
Installation Ease
You already checked fitment details like thread pitch and stud length, and that groundwork makes installation feel a lot less stressful. Now pick kits that match thread size and length, such as M8x1.25 or M10x1.5, so you avoid cross-threading and wasted time. Prefer complete kits that include studs, nuts, springs, and washers or gaskets so you don’t run back to the store. Choose fasteners with pre-cut or full-length threads and the right pitch so you can hand-start bolts easily. Also select high-temperature steel with zinc or other coatings to cut down on seizure and make future removal simpler. Finally, check bolt diameters and head styles against access constraints so common tools and simple angles work without extra disassembly.
