Engine Fastener Kits
Circle Track Engine Fastener Kits at JJ Motorsports
Engine fasteners are precision-crafted to securely connect vital engine parts, like camshafts and carburetors, for peak performance under pressure. These durable options are indispensable for maintaining a powerful and reliable engine setup alongside other durable fastener solutions.
Shop trusted brands like Allstar Performance, Wehrs Machine, MSD Ignition, Moroso, Chevrolet Performance, Dart, Comp Cams. Explore related categories such as Exhaust Manifold/Header Fastener Kits, Rocker Arm Fastener Kits, Valve Cover Fastener Kits, Cylinder Head Fastener Kits, Carburetor Fastener Kits.
Top Circle Track Engine Fastener Kits
- Allstar Performance Offset Stud 5/16-18 ALL26053 – Air Cleaner Stud, Offset, 5/16-18 in Thread, 6 in Long, Steel, Zinc Oxide, Each.
- Wehrs Machine Air Cleaner Nut 5/16in Thread WEHWM273125 – Air Cleaner Nut, Thumb Screw, 5/16-18 in Thread, O-Ring, Aluminum, Black Anodized, Each.
- Allstar Performance Rocker Arm Stud Kit SBC 8 pcs ALL90230 – Rocker Arm Stud Kit SBC 8 pcs, Rocker Arm Stud, 7/16-14 in Base Thread, 3/8-24 in Top Thread, 2.375 in Long, Steel, Small Block Chevy, Set of 8.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
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- Qty in Cart
- Quantity
- Price
- Subtotal
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Air Flow Research Stud Girdles Adj Nut 1pk 3/8 SBC/SBF 6216-1
AIR FLOW RESEARCH
$9.00Rocker arm nuts are critical fasteners that secure your valve train under extreme loads and high RPM conditions. A properly spec'd nut like this Air Flow Research stud girdle design prevents loosening, valve float, and catastrophic engine damage. For...AFR6216-1- SKU:
- AFR6216-1
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
$9.00 -
Air Flow Research Stud Girdles Adj Nut (1) 6214-1
AIR FLOW RESEARCH
$9.00Proper rocker arm assembly depends on hardware that can withstand constant valve train stress without slipping or loosening. This Air Flow Research stud girdle adjustment nut delivers the clamping force and durability required for reliable, repeatable...AFR6214-1- SKU:
- AFR6214-1
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
$9.00 -
Hex Drive Screw 3/8in W/ 3/8-24 Threads 38-24
STOCK CAR PROD-OIL PUMPS
$41.99When you're assembling or maintaining Stock Car Products pumps and mounting plates, fastener reliability is non-negotiable. This hex drive screw delivers the precision fit and corrosion resistance your high-performance setup demands, with cadmium plating...SCP38-24- SKU:
- SCP38-24
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$41.99Qty in Cart: 0Quantity:Price:$41.99Subtotal: -
Schoenfeld Header Bolt 3/8-16 x 1in 5/16 Head 16pack 3002-16
SCHOENFELD
$17.99Header bolts endure extreme heat cycles and vibration that standard fasteners simply can't handle—choosing the right hardware is critical for long-term reliability and preventing catastrophic exhaust leaks. Schoenfeld's chromoly construction with black...SCH3002-16- SKU:
- SCH3002-16
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
$17.99 -
Hardware Kit for 1 Blade 61-1000-000
RACE-FAN
$7.50If you're running a high-performance cooling system, proper blade retention is non-negotiable. This hardware kit ensures your 1 Blade 61-1000-000 fan stays securely fastened under load, preventing costly downtime and maintaining consistent cooling...RFN61-1000-000- SKU:
- RFN61-1000-000
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$7.50 -
Mr. Gasket Header Bolt Set (12pk) GM LS1 8mm 918G
MR. GASKET
$11.31Header bolts endure extreme thermal cycling and vibration—stock fasteners can loosen, crack, or corrode, leading to exhaust leaks and lost performance. Mr. Gasket's 8mm header bolt set delivers the reliability you need for a sealed, secure connection...MRG918G- SKU:
- MRG918G
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$11.31 -
Mr. Gasket Oil Pan Bolt Set - GM LS Engines S/S 60850G
MR. GASKET
$34.96Stock oil pan bolts are prone to loosening under high engine loads and vibration, compromising your oil seal integrity and risking catastrophic leaks. Mr. Gasket's hex head bolt set delivers secure, reliable fastening for LS and Gen V LT engines with...MRG60850G- SKU:
- MRG60850G
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$34.96 -
SBC Oil Pan Stud Kit 81300
MILODON
$36.95A quality oil pan stud kit is essential for reliable engine sealing and leak prevention—especially if you're running higher boost pressures or frequent track days. Factory fasteners can loosen under vibration and thermal cycling, leading to costly oil...MIL81300- SKU:
- MIL81300
- Availability:
- Ships Same Business Day
- Weight:
- 0.54 LBS
$36.95 -
Longacre Magnetic Drain Plug 3/8in NPT 52-33320
LONGACRE
$11.99Metal shavings and ferrous debris circulating through your engine oil accelerate wear on critical components—a magnetic drain plug captures these contaminants before they cause damage. By switching to the Longacre Magnetic Drain Plug, you're adding a...LON52-33320- SKU:
- LON52-33320
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
$11.99 -
Jones Racing Pulley Mounting Kit w/ Bolts & Bushings WP-6104-MK
JONES RACING PRODUCTS
$12.05A properly mounted pulley system is critical for reliable belt drive performance and accessory functionality on your Small Block Chevy engine. This Jones Racing kit eliminates guesswork with precision-engineered components that ensure correct alignment...JRPWP-6104-MK- SKU:
- JRPWP-6104-MK
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$12.05 -
Jones Racing 6.0in long Bolt 7/16in Diameter w/ End Cap BEC-2109-E
JONES RACING PRODUCTS
$16.14Mandrel drive bolts are critical fasteners in high-performance racing applications where vibration, shear forces, and precision alignment demand components that won't fail under extreme conditions. This Jones Racing bolt delivers the reliability you need...JRPBEC-2109-E- SKU:
- JRPBEC-2109-E
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$16.14 -
Jones Racing 5.5in Long Bolt 7/16in Diameter w/ End Cap BEC-2109-D
JONES RACING PRODUCTS
$15.61A mandrel drive bolt is the backbone of any precision drivetrain assembly, and this Jones Racing unit delivers the strength and reliability required for high-performance applications. Whether you're building a custom driveshaft or assembling critical...JRPBEC-2109-D- SKU:
- JRPBEC-2109-D
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$15.61 -
Holley ACCELERATOR DISCHARGE NOZZLE SCREW - SOLID 121-6
HOLLEY
$22.96The Holley 121-6 discharge nozzle screw is a critical fuel metering component that directly impacts your carburetor's atomization and throttle response. Over time, corrosion and wear compromise the precision fit of OEM screws, leading to lean or rich...HLY121-6- SKU:
- HLY121-6
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$22.96 -
Dart Head Stud Kit GM LS Next Iron Block 66130018B
DART
$661.09Head studs are the foundation of a reliable, high-revving engine—especially in forced-induction LS builds where cylinder pressure demands absolute clamping force consistency. The Dart Head Stud Kit for GM LS Next Iron blocks eliminates the risk of head...DRT66130018B- SKU:
- DRT66130018B
- Availability:
- Ships Same Business Day
- Weight:
- 6.24 LBS
$661.09Qty in Cart: 0Quantity:Price:$661.09Subtotal: -
Rocker Arm Nuts 7/16-20 Sure-Lock Design 86050S-16
CROWER
$56.99Rocker arm nuts are a critical fastening component in any high-performance engine build—improper retention can lead to valve train failure and catastrophic engine damage. The Sure-Lock design prevents vibration-induced loosening, ensuring your rocker...CRO86050S-16- SKU:
- CRO86050S-16
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$56.99 -
ARP Starter Bolt Kit SS Hex Ford 450-3503
ARP
$8.99Starter bolts are critical fastening points that endure intense vibration and thermal cycling—a single failure can leave you stranded. ARP's stainless steel hex head bolts eliminate corrosion and thread stripping, ensuring reliable starts lap after lap...ARP450-3503- SKU:
- ARP450-3503
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
$8.99 -
ARP Starter Bolt Kit SS 6pt GM 10mm x 1.775/4.770 430-3506
ARP
$20.99Starter bolts are critical fastening points that endure constant vibration, thermal cycling, and high clamping loads—making OEM hardware prone to corrosion and loosening over time. ARP's stainless steel starter bolt kit eliminates these reliability...ARP430-3506- SKU:
- ARP430-3506
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
$20.99 -
ARP Head Stud Kit - LS w/ 04 & Later Heads 234-4345
ARP
$495.99Head studs are non-negotiable for any LS engine running boost or high cylinder pressures—they distribute clamping force more evenly than bolts and eliminate thread stripping in aluminum heads. ARP's 234-4345 kit delivers the reliability you need for...ARP234-4345- SKU:
- ARP234-4345
- Availability:
- Ships Same Business Day
- Weight:
- 5.44 LBS
$495.99 -
ARP Head Stud Kit 12pt GM LS 2003 & Earlier 234-4344
ARP
$494.99Head studs are non-negotiable for any LS engine running boost or high-rpm power. ARP's 12-point chromoly studs provide superior clamping force and repeatability compared to factory bolts, ensuring your cylinder head stays seated under extreme combustion...ARP234-4344- SKU:
- ARP234-4344
- Availability:
- Ships Same Business Day
- Weight:
- 6.73 LBS
$494.99Qty in Cart: 0Quantity:Price:$494.99Subtotal: -
ARP SBF 351 Dart SHP Main Stud Kit 154-5613
ARP
$116.99If you're building or rebuilding a Small Block Ford 351 with a Dart SHP block, main studs are non-negotiable for reliability under sustained high rpm and boost. ARP's chromoly studs eliminate the weak point of factory bolts, providing superior clamping...ARP154-5613- SKU:
- ARP154-5613
- Availability:
- Ships Same Business Day
- Weight:
- 4.11 LBS
$116.99
