CHEVROLET Engine Blocks & Accessories Engines & Components - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

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

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Milodon Main Caps 11153

Milodon Main Caps 11153

Main Cap, Ductile Iron, Front, Straight Outer Bolts, 2-Bolt, Large Journal, Chevy, Small Block, Each

Part Number: MIL-11153

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Milodon Main Stud Kits 81115

Main Studs, Straight 4-Bolt Main, Chevy, 350, 400, Kit

Part Number: MIL-81115

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

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ARP High Performance Series Main Bolts 134-5202

4.75 out of 5 stars ( 37 )

Estimated Ship Date: Tomorrow

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Milodon Main Stud Kits 81137

Main Studs, Straight 4-Bolt Main, Chevy, Big Block, Kit

Part Number: MIL-81137

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Top Street Performance Trussed-Style Engine Valley Covers 81043C

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

Part Number: TSN-81043C

Not Yet Reviewed

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Dart Block Sleeves 32160411

BIG BLOCK CHEVY BLOCK SLEEVE

Part Number: DRT-32160411

Not Yet Reviewed

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Dart Block Sleeves 32160111

Cylinder Sleeve, Cast Iron, 4.240 in. Bore I.D., 0.185 in. Wall Thickness, 6.370 in. Length, Each

Part Number: DRT-32160111

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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PRW Main Cap Stud Kits for 2016-2024 CAMARO, 2014-2019 CORVETTE - 1034613

Main Studs, 8740 Chromoly, 200,000 Psi Tensile Strength, Gen V, LT1, Chevy, Kit

Part Number: PQX-1034613

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

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ARP Main Stud Kits 234-5802

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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PRW Billet Steel Main Girdles 9035001

MAIN GIRDLE, BILLET STEEL, CHEV 350, 2pc Rear Seal, Does Not incl Studs or Fasteners

Part Number: PQX-9035001

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

World Products Main Caps WPI703370C

Main Caps, Merlin III, 3-Center, Angled Outer Bolts, 4-Bolt, Chevrolet, Big Block, Each

Part Number: WRL-703370C

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today

PRW Billet Steel Main Girdles 9040001

MAIN GIRDLE, BILLET STEEL, CHEV 400, Does Not incl Studs or Fasteners

Part Number: PQX-9040001

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Milodon Main Stud Kits 81128

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

Part Number: MIL-81128

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Milodon Main Stud Kits 81130

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

Part Number: MIL-81130

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Milodon Main Stud Kits 81131

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

Part Number: MIL-81131

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Milodon Main Stud Kits 81133

Main Studs, 4-Bolt Main, Chevy, Big Block, with Milodon Caps, Kit

Part Number: MIL-81133

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Milodon Main Stud Kits 81134

Main Studs, 4-Bolt Main, Chevy, Big Block, with Milodon Caps, Windage Tray, Kit

Part Number: MIL-81134

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Milodon Main Bolt Kits 81140

Main Cap Fasteners, Milodon Straight Bolt Caps, 8740 Chrome Steel Studs, 4130 Heat Treated Steel Washers and Nuts, Chevrolet, Big Block, Kit

Part Number: MIL-81140

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

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: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Top Street Performance Finned Aluminum Engine Valley Covers 81045BK

Not Yet Reviewed

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Howards Cams Extreme Billet Main Caps H350C-1

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

Part Number: HRS-H350C-1

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Howards Cams Extreme Billet Main Caps H454-1

Main Cap, Billet Steel, Front, Straight Outer Bolts, 4-Bolt, Chevy, Big Block, Each

Part Number: HRS-H454-1

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Milodon Main Stud Kits 81117

Main Studs, Straight 4-Bolt Main, Chevy, 350, 400, with Windage Tray, Kit

Part Number: MIL-81117

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

ARP High Performance Series Main Bolts 134-5202

4.75 out of 5 stars ( 37 )

Estimated Ship Date: Tomorrow

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Milodon Main Stud Kits 81139

Main Studs, 2-Bolt Main, Chevy, Big Block, with Windage Tray, Kit

Part Number: MIL-81139

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

ARP Main Stud Kits 235-5502

5 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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