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Use Dorman engine rear main seal covers to ensure the proper sealing of your engine, to stop and/or prevent engine oil leakage. They are made from high-quality materials and are available as direct replacements for a proper fit on various makes and models. Whatever your repair needs, Dorman has just what you're after!
( 10 )
$53.95
Summit Racing™ LS Rear main seal housings are the correct housings for all LS models. These aluminum housings are ideal for replacing damaged housings and building a new project from scratch. Summit Racing™ LS rear main seal housings are designed for a correct fit and quality performance.
( 17 )
$50.99
ARP High Performance Series main bolts are rated at 180,000 psi and a popular premium replacement for OEM fasteners. Designed to meet the exacting standards and demands of professional engine builders, ARP bolts are forged from 8740 chromoly steel and feature a reduced wrenching head, large underhead radius, and rolled threads for the utmost in reliability. The threads are rolled after heat-treating which gives them about 2,000 percent better fatigue strength than most main bolts that are threaded prior to heat-treating. Hardened parallel-ground washers are included with each kit.
( 174 )
$50.99
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$87.99
ARP main stud kits help eliminate main cap walk/fretting and protect the threads in your engine block. They include studs made from 8740 chromoly steel and heat-treated in-house to 190,000 psi tensile-strength rating. The precision J-form threads are rolled after heat-treat for much stronger threads than the competition. Kits come complete with hardened parallel-ground washers and high-quality nuts. Add confidence in the strength of your engine build with the ARP main stud kit designed for your application.
( 388 )
$56.99
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$115.99
Melling cylinder sleeves are available for a variety of bore sizes to fit all sorts of cylinders. They are great for fixing damaged cylinders. Get your cylinder sleeves from Melling on order today!
( 59 )
$52.99
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$107.99
Do you need main cap fasteners for your Ford engine? Ford Performance Parts main stud and bolt kits are available for a variety of Ford V8s. Their kits contain all main bolts, studs, washers, and nuts for one block. Secure your main caps the right way with Ford Performance Parts main stud and bolt kits. Note: some bolts and studs are torque-to-yield and must be replaced after each use.
( 1 )
$62.99
Dial-in your bellhousing alignment to the engine block with Lakewood offset dowel pins. These adjustable pins can correct improper alignment. They're offered in a variety of offsets, lengths, and diameters for nearly a dozen makes, including Chevy, Oldsmobile, Pontiac, Buick, Ford, Lincoln, Mercury, and Mopar models. Stock pins for Ford and GM applications are also available. Lakewood bellhousing dowel pins are simple, affordable keys to aligning the transmission housing with your engine.
( 26 )
$59.35
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$76.45
The final detail to enhance the appeal of your LS engine--Summit Racing™ LS finned aluminum valley covers. Fabricated from aluminum, they are available with a natural or polished finish, or black powdercoated with machined fin tops for great contrast and looks. The material, finishes, and classic fin design of our Summit® LS intake valley plates offer the ideal touch to dress up your engine area.
( 1 )
$60.99
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$65.99
Earl's Performance oil cooler block-off plates are billet covers—built with an extra 1/8 in. NPT port that can be used for an oil pressure gauge or a turbo oil supply port. The 1/8 in. port is located on the top to provide extra header clearance. These oil cooler block-off plates are designed to fit most GM LS/LT oil pans. Earl's Performance oil cooler block-off plate feature: * Billet aluminum construction with black anodized finish * Includes block-off plate, O-ring seal (no gasket required), and mounting screws
( 9 )
$56.19
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$63.15
Howards Cams extreme billet main caps are precision CNC-machined from superior-quality low-carbon 1020 billet material. They come available as stock replacements (straight bolt) or with splayed outer bolt holes. The splayed caps feature 10 degree angled outer holes to positively reinforce and tie the block together. Front, rear and center caps are all available. Use all the Howards Cams caps together for the ultimate in bottom-end stress and flex management. Howards Cams main caps feature side notches for easy removal and are proudly 100 percent manufactured in the USA. Line boring is required after installation.
( 14 )
$89.99
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$103.99
Whether you're looking for more power or simply trying to refresh the motor, there will come a time when you'll need Summit Racing Equipment® LS engine hardware kits. These kits include brass freeze plugs and main cap side bolts for your LS engines. Your rebuilt engine will not be complete without Summit Racing Equipment® LS engine hardware kits.
( 2 )
$57.78
ARP Pro Series main bolts are application-specific and rated at 190,000 psi. Designed for use in competition engines, as well as to meet the exacting standards and demands of professional engine builders, ARP bolts are forged from 8740 chromoly steel and feature a reduced wrenching head, large underhead radius, and rolled threads for the utmost in reliability. The threads are rolled after heat-treating which gives them about 2,000 percent better fatigue strength than most main bolts that are threaded prior to heat-treating. Hardened parallel-ground washers are included with each kit.
( 14 )
$59.99
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$74.99
ACDelco offers rear main seal housings for a wide range of year/make and engine applications. The one-piece aluminum replacements are designed, engineered, tested, and backed by General Motors. They are validated OE parts for specific Chevrolet, Buick, GMC, and Cadillac vehicles. These components are designed to give the engine oil leak protection from between the crankshaft output flange and the engine block. Order the engine crankshaft seal housing recommended for your ride.
( 7 )
$88.99
If you've dressed up your engine but there's just something missing, add some style in an unlikely place with a finned cast aluminum valley pan cover from Top Street Performance. The lightweight covers are available in a choice of black and polished finishes. Order the model for your application. Notes: Will fit LS1 and LS6 engines. No knock sensor or displacement on demand provisions.
Not Yet Reviewed
$74.06
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$86.42
ARP Powersports engine and accessory bolt kits contain professional-quality fasteners. They're manufactured with premium materials and finishes that are nominally rated at 180,000 psi tensile strength—superior to OEM bolts and better than hardware grades. Motorcycles run at very high rpms and put tremendous stress on lightweight parts. The task is holding your engine and accessories together during those times. ARP Powersports fasteners are a convenient and easy way to assemble your engine with confidence, knowing that ARP is up to the challenge. Choose the kit designed for your specific bike.
( 1 )
$91.99
Summit Racing™ Extreme Duty main cap bolts are engineered to withstand the stress and abuses that high-horsepower engines endure. These fastener kits come with all necessary bolts, washers, lubricant, and instructions to ensure maximum performance and reliability. Order the hardware recommended for your year/make and engine application. Extreme Duty fasteners feature: * 190,000 psi tensile strength minimum * High-strength chromoly steel utilized for all products * Precision manufacturing processes ensure consistent product performance * All studs are twice straightened to guarantee straightness * Threads are rolled after heat treatment for high strength * Tensile and yield strength tested after thread rolling * Uniformly applied black oxide surface finish * Anti-rust oil coating to protect fasteners from corrosion
Not Yet Reviewed
$59.99
These COMP Cams engine finishing kits contain the often-forgotten components missing during final engine assembly. They include parts like Woodruff keys, cylinder head alignment dowels, cam bolts, timing cover dowels, and oil pump dowels. Available for small and big block Chevrolet and small block Ford engines, the COMP Cams engine finishing kits make engine assembly easy.
( 66 )
$54.95
When using a remote-mounted water pump, you have to make the connection to the block. The easiest way to do that is with Philadelphia Racing Products AN block adapters. They're CNC-machined from 6061 billet aluminum and anodized for protection and appearance. Each adapter is O-ringed for a tight seal and includes stainless hardware.
Not Yet Reviewed
$64.99
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$79.99
Milodon freeze plugs will not rot out, like lower cost steel ones. Your new engine assembly deserves the best. Don't get stuck trying to replace a leaking steel freeze plug behind a motor mount a year or two from now. Milodon freeze plug kits include all of the necessary external block freeze plugs, and cam and oil galley plugs for one complete engine.
( 47 )
$53.95
Replace those worn-out main studs with these main stud kits from Summit Racing™! Our main stud kits contain alloy steel bolts that have been heat-treated to a 180,000 psi tensile strength rating. Summit Racing™ main stud kits are a great choice for high strength and high quality at a value price.
( 8 )
$55.99
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$79.99
On Sale
QuickTime offers bellhousing accessories, including these dowel pins, to help you to complete your project. They're made from quality material and are designed to correct the improper register bore alignment of bellhousing to your engine crankshaft center line.
( 4 )
$81.35
PRW main cap stud kits help eliminate main cap walk and also protect the threads in your engine block. The main cap studs work with the main caps to help strengthen the foundation for your next high horsepower build. These main cap fasteners come complete with hardened parallel-ground washers and quality hex-style nuts. Add confidence in the strength of your engine build when you use these PRW main cap stud kits.
( 6 )
$69.13
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$98.48
Pioneer offers quality new cylinder head dowel pins at an affordable price. These dowel pins are great to have on hand when you do machine work on your block. Pioneer cylinder head dowel pins are made with first-rate materials and are available in a choice of sizes for accurate cylinder head alignment.
( 56 )
$51.99
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$94.99
Trick Flow® main cap fastener replacement hardware kits are available for a variety of small and big block applications from the early 1960s and up. The 2-bolt mains are offered in bolt and stud (with nut) styles, and in standard hex and extended hex head style, all with washers included. These kits are intended for use with Trick Flow® main cap girdles. Order the hardware needed for your year/make and engine.
Not Yet Reviewed
$50.99
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$73.99
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