Engine Blocks & Accessories Engines & Components

Engine Works Small Block Rear Main Seal Adapters 350ERMSA

Seal Adapter, Billet Aluminum, 1 to 2-Piece Style, Chevy, Small Block Gen I, Kit

Part Number: EW1-350ERMSA

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Howards Cams Extreme Billet Main Caps H350R-1

Howards Cams Extreme Billet Main Caps H350R-1

Main Cap, Billet Steel, 3-Center, Straight Outer Bolts, 4-Bolt, Chevy, Small Block, Each

Part Number: HRS-H350R-1

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

PRW Billet Steel Main Girdles 9045401

Main Cap Girdle, 1045 Billet Steel, No Hardware, for Chevy Big Block 454, Each

Part Number: PQX-9045401

Not Yet Reviewed

Estimated Ship Date: Jun 29, 2026 if ordered today

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Estimated Ship Date: Jun 29, 2026 if ordered today

Edelbrock Cylinder Sleeves 549110-1

CYLINDER SLEEVE 4.125" X 9.75

Part Number: EDL-549110-1

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

World Products Main Stud Kits WPI701432

Main Studs, 4-Bolt Main, Man O'War, Billet Main Caps, Ford, Small Block Windsor, Kit

Part Number: WRL-701432

Not Yet Reviewed

Estimated Ship Date: Jun 3, 2026 if ordered today

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Estimated Ship Date: Jun 3, 2026 if ordered today

Brodix Cylinder Heads Cylinder Sleeves 8BSL44-324

Cylinder Sleeve, 4.590 in. Bore, 4.711 in. OD, Steel, Chevy Big Block, Tall Deck, Each

Part Number: BRO-8BSL44-324

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

ARP Main Stud Kits 208-5401

Main Studs, 2-Bolt Main, for use on Honda®, 2.2, 2.3L, Kit

Part Number: ARP-208-5401

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Milodon Main Stud Kits 81129

Main Studs, 4-Bolt Main, Chevy, Large Journal, Small Block, with Milodon Caps, Windage Tray, Kit

Part Number: MIL-81129

Not Yet Reviewed

Estimated Ship Date: Jul 20, 2026 if ordered today

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Estimated Ship Date: Jul 20, 2026 if ordered today

Melling Cylinder Sleeves CSL576

Cylinder Sleeve, Cast Iron, 6.250 in. Bore I.D., 0.125 in. Wall Thickness, 17.500 in. Length, Each

Part Number: MEL-CSL576

Not Yet Reviewed

Estimated Ship Date: May 22, 2026 if ordered today

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Estimated Ship Date: May 22, 2026 if ordered today

ARP Main Stud Kits 204-5403

Main Studs, 2-Bolt Main, Volkswagen, 2.8L, V6, Kit

Part Number: ARP-204-5403

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Top Street Performance Trussed-Style Engine Valley Covers 81043BK

Engine Valley Cover, Trussed, Billet Aluminum, Black, Hardware Included, Chevy, Each

Part Number: TSN-81043BK

Not Yet Reviewed

Estimated Ship Date: Jun 29, 2026 if ordered today

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Estimated Ship Date: Jun 29, 2026 if ordered today

PRW Billet Steel Main Caps 1745402

Main Caps, Billet Steel, 4-Bolt, Straight, Chevy, Big Block, Set of 3

Part Number: PQX-1745402

Not Yet Reviewed

Estimated Ship Date: Jun 29, 2026 if ordered today

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Estimated Ship Date: Jun 29, 2026 if ordered today

PRW Billet Steel Main Girdles 9030201

MAIN GIRDLE, BILLET STEEL, FORD 289-302, Does Not incl Studs or Fasteners

Part Number: PQX-9030201

Not Yet Reviewed

Estimated Ship Date: Jun 29, 2026 if ordered today

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Estimated Ship Date: Jun 29, 2026 if ordered today

Dorman Rear Main Seal Housings 635-450

Rear Main Seal Retainer

Part Number: RNB-635-450

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Allstar Performance Lifter Valley Plates ALL90106

Billet Cover, LS1 Billet Valley Cover

Part Number: AAF-ALL90106

Not Yet Reviewed

Estimated Ship Date: Jun 3, 2026 if ordered today

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Estimated Ship Date: Jun 3, 2026 if ordered today

PRW Billet Steel Main Girdles 9046000

MAIN GIRDLE, BILLET STEEL, FORD 460, incl PRW fasteners & hdwe

Part Number: PQX-9046000

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

PRW Billet Steel Main Caps 1735002

Main Caps, Billet Steel, 4-Bolt, Angled, Chevy, Small Block, Set of 3

Part Number: PQX-1735002

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Milodon Main Caps 11053

Main Cap, Ductile Iron, Front, Angled Outer Bolts, 4-Bolt, Chevy, Small Block, Each

Part Number: MIL-11053

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jul 20, 2026 if ordered today

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Estimated Ship Date: Jul 20, 2026 if ordered today

PRW Main Cap Stud Kits for 1998-2008 RAM 2500, RAM 3500 - 1000313

Main Cap Studs, 4140 Studs, Parallel Ground Washers, 12-Point Nuts, 2-Bolt Mains, 5.9L, 24V, L6, Cummins, Diesel, Dodge, Kit

Part Number: PQX-1000313

Not Yet Reviewed

Estimated Ship Date: Jun 29, 2026 if ordered today

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Estimated Ship Date: Jun 29, 2026 if ordered today

Melling Cylinder Sleeves CSL578

Cylinder Sleeve, Cast Iron, 6.750 in. Bore I.D., 0.125 in. Wall Thickness, 17.000 in. Length, Each

Part Number: MEL-CSL578

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

PRW Main Cap Stud Kits 1045442

Main Studs, 8740 Chromoly, 200,000 Psi Tensile Strength, 4-Bolt Main, Chevy, Big Block, Kit

Part Number: PQX-1045442

Not Yet Reviewed

Estimated Ship Date: Jun 29, 2026 if ordered today

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Estimated Ship Date: Jun 29, 2026 if ordered today

Melling Cylinder Sleeves CSL569

Cylinder Sleeve, Cast Iron, 5.375 in. Bore I.D., 0.125 in. Wall Thickness, 14.250 in. Length, Each

Part Number: MEL-CSL569

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

Milodon Main Stud Kits 81187

Main Studs, 2-Bolt Main, AMC, 290-401, Kit

Part Number: MIL-81187

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Top Street Performance Main Cap Fasteners 635-131950

PRO SERIES MAIN STUD KIT - FORD COYOTE 5.0L, 12-PT

Part Number: TSN-635-131950

Not Yet Reviewed

Estimated Ship Date: Jun 26, 2026 if ordered today

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Estimated Ship Date: Jun 26, 2026 if ordered today

Melling Cylinder Sleeves CSL334F

Cylinder Sleeves, CYLINDER SLEEVE (3.550X 3.742X 7.245-3.964)

Part Number: MEL-CSL334F

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today