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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
Seal up the casting core holes in your engine block and heads with Melling freeze plugs. They're manufactured from a variety of quality materials—such as brass, steel, and stainless steel—and offered in different diameters and depths to fit your specific application. These expansion plugs help protect against cracks caused by the pressure of frozen coolant and in regular operation will ensure that all vital fluids stay in the engine, where they belong. They are available for a wide range of makes and models, and can be ordered individually or in a multi-piece kit.
( 163 )
$10.99
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$27.99
Lakewood EZ-Adjustable bellhousing dowel pins are unique because they slip easily into the engine block and are designed to be turned with a wrench rather than a screwdriver. Once they're pointed in the correct direction, a set screw (which runs down the center) is then tightened, which prevents the dowel pin from turning. No need to pound the pins in and out—a no drilling or tapping is required! Order the model recommended for your vehicle and engine application.
( 29 )
$199.95
Keep your main caps secure with a set of Chevrolet Performance main cap fasteners. They are made from quality OEM materials and are built to strict tolerances to ensure a direct fit. You don't ever want to have a failure in your engine's rotating assembly. Pick up Chevrolet Performance main cap fasteners for maximum reliability.
( 6 )
$6.99
On Sale
Holley LS valley covers are the latest accessories offered for the GM LS engine platform. These covers install between the two banks of cylinder heads, depending on your usage of knock sensors, displacement on demand, and active fuel management. They're available in a cast aluminum finned design to match Holley's popular valve covers, as well as a billet aluminum trussed version for a race-inspired look. The valley pan covers are offered in a variety of finishes.
( 2 )
$273.95
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$299.95
Melling oil galley barbell plugs are quality replacements for the galley barbell plugs on your LS engine. These oil diverter valves fit in the back of your LS engine block and are essential to the oil pressure circuit. You don't want to overlook the little things for an enduring repair or build, so don't forget to order a Melling oil galley barbell plug.
( 3 )
$9.99
Ensure proper alignment with Summit Racing™ bellhousing dowel pins. Our pins are a must for easier alignment when installing the bellhousing on your engine block. They contribute to fewer shifter problems and maximum life for your bearings and transmission. The dowel pins are available in a variety of sizes and offsets. Order the pair recommended for your vehicle application.
( 87 )
$14.99
Dorman expansion plugs are conveniently designed aftermarket replacements for stripped plugs. A leak-proof fit and long service life are assured every time, due to high-quality standards and materials used in the manufacturing process. Dorman engine and camshaft expansion plugs are offered in multiple sizes, styles, and materials for precise fitment on countless makes and models. They're easy to install and available individually or in multi-pack sets.
( 74 )
$7.99
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$35.99
These Pioneer performance freeze plugs are designed by engine rebuilders, for engine rebuilders. Several types of freeze plugs are offered in a choice of materials and sizes for a large variety of applications.
( 41 )
$13.99
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$43.79
PRW billet steel main girdles help eliminate the block flex and cap walk that occurs as a result of stress while under extreme loads, or during nitrous oxide power bursts in high performance engines. PRW main stud girdles are manufactured from premium quality 1045 billet steel, and include high-quality PRW fasteners and hardware. Select the girdle designed for your vehicle's engine.
( 2 )
$239.37
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$239.89
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 )
$8.99
ACDelco GM Genuine Parts replacement bolts are available for a variety of applications, including transmission torque converter housings. Installing factory-recommended hardware helps to ensure the same performance, durability, and service life you expect from General Motors.
( 14 )
$3.99
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
Mr. Gasket brass freeze plug kits eliminate any chance of rusted-out engine expansion plugs. Though they're designed for marine applications, these kits are ideal for long-term stored vehicles, as well as for everyday street use. The plugs guard your engine against freeze damage and cracks when there is insufficient antifreeze protection. Each kit includes all of the plugs needed for a complete (and specific) engine block—for applications from 1955 and up.
Not Yet Reviewed
$31.46
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$49.95
PRW billet steel main caps raise the bar in the high performance industry. The main caps are precision-machined from high strength steel, which offers both the proper balance of strength and flexibility to allow transfer of increased shock loads to the crank and bearings. These main caps stabilize the entire crankshaft rotating assembly in your high-performance engine by eliminating annoying cap walk, and reducing main bearing bore distortion. With a combination of top-quality performance components and reasonable pricing, we know that when you receive your new PRW billet steel main caps, you will have no trouble seeing what the excitement is all about!
( 2 )
$207.03
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$312.92
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 )
$210.84
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$265.34
ACDelco offers engine piston oil nozzles for a wide range of cars, trucks, and vans. These billet steel replacements are designed, engineered, and tested to rigorous standards—all backed by General Motors. GM Genuine Parts are true OE components installed during the production of (or validated for) GM vehicles. Order the piston oiler kit recommended for your application.
Not Yet Reviewed
$8.99
Avoid corrosion in your engine and replace your rusty freeze plugs with Proform's durable brass freeze plug kits. All of the necessary plugs are included for one complete engine block.
( 22 )
$19.99
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$27.99
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
ACDelco cylinder head pins offer accurate alignment. The precise positioning of your cylinder heads prevents leaks and keeps your engine running efficiently. So, maintain the quality performance of your ride by utilizing cylinder head dowel pins from ACDelco in your build.
( 10 )
$2.99
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$3.99
Melling engine expansion plug kits come with everything needed to replace the leaky "freeze" plugs on your current engine. When you have the motor out of the chassis, it's the ideal time to update the plugs before they start leaking. Order the kit recommended for your application—and stay ahead of the game with Melling!
( 12 )
$10.99
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$23.99
PRW Main Cap Side Bolts uses premium grade Custom 4135 Steel rated at "aircraft" quality. Their side bolts are then specially heat-treated to 180,000 psi. This heat-treating procedure allows for total heat penetration which results in a stronger, more superior stud compared to lesser quality studs from other manufacturers. PRW main cap side bolts are then centerless ground after being heat treated and then thread rolled which assures better fatigue strength than having this process done before heat treatment. This manufacturing process may cost more to do but the results are well worth the extra effort.
Not Yet Reviewed
$25.98
Protect your engine block with these Chevrolet Performance expansion plugs. Expansion plugs protect your engine block from freezes that can crack or permanently damage your expensive block. These plugs are made of brass and are designed to withstand thermal and corrosive effects under the hood of your car without failing. Don't risk expensive damage or deal with a leaky plug anymore--get these Chevrolet Performance expansion plugs.
( 4 )
$6.99
Chevrolet Performance oil cooler delete plates are designed to cover the oil cooler outlet. They're made from aluminum and are available for a variety of specific vehicle and/or engine applications.
( 11 )
$25.99
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