Engine Blocks & Parts

Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each

Part Number: WRL-087110

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Estimated Ship Date: Jan 19, 2026 if ordered today

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Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.495 in. Bore, 2-Piece Seal, 10.200 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091111

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Estimated Ship Date: Jan 19, 2026 if ordered today

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Engine Block, Cast Iron, 4-Bolt Mains, 4.115 in. Diameter Bore, 2-Piece Rear Main Seal, Ford, Small Block, Each

Part Number: WRL-087082

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 19, 2026 if ordered today

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Engine Block, Cast Iron, 4-Bolt Mains, 3.990 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each

Part Number: WRL-087172

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Jan 19, 2026 if ordered today

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Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.595 in. Bore, 2-Piece Seal, 10.200 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091112

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Estimated Ship Date: Jan 19, 2026 if ordered today

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Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.595 in. Bore, 2-Piece Seal, 9.800 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091102

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Estimated Ship Date: Jan 19, 2026 if ordered today

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Main Cap Fasteners, Main Cap Girdle Stud Kits, 2-bolt, Stud Style, Hex Head, Nuts, Washers, Ford, Big Block FE, Big Block 385 Series, Kit

Part Number: PQX-1000215

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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

Part Number: PQX-1745402

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Estimated Ship Date: Feb 19, 2026 if ordered today

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Main Studs, 8740 Chromoly, 200,000 Psi Tensile Strength, Large Journal, 2-Bolt Main, Chevy, Small Block, Kit

Part Number: PQX-1035022

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Estimated Ship Date: Feb 20, 2026 if ordered today

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

Part Number: PQX-1035042

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Estimated Ship Date: Feb 20, 2026 if ordered today

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

Part Number: PQX-1045442

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Estimated Ship Date: Feb 20, 2026 if ordered today

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Main Studs, 2-Bolt, Chrysler 318-360, 383-440 and 331-392 Early Hemi, Kit

Part Number: MIL-81185

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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

Part Number: MIL-81115

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 17, 2026 if ordered today

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Main Studs, SCM-4140 Alloy Steel, 12-Point, 2-Bolt, Chevy, 6.6L, Duramax Diesel, LBZ/LMM, Kit

Part Number: PQX-1000323

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Estimated Ship Date: Feb 19, 2026 if ordered today

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Main Studs, 2-Bolt, Chevy, Saturn, 2.0L, Kit

Part Number: ARP-209-5401

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Main Studs, 2-Bolt, Ford, 351C, with Windage Tray, Kit

Part Number: MIL-81168

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 16, 2026 if ordered today

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Main Studs, 2-Bolt, Pontiac 326-455, with Windage Tray, Kit

Part Number: MIL-81223

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 16, 2026 if ordered today

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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

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Estimated Ship Date: Feb 19, 2026 if ordered today

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

Part Number: MIL-81135

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Estimated Ship Date: Mar 17, 2026 if ordered today

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Main Caps, Billet Steel, Two 2-Bolt, Three Cross-Bolt, 383-440 c.i.d., Big Block Mopar, B/RB, V8, Chrysler, Dodge, Plymouth, Set of 5

Part Number: PQX-1744002

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Main Studs, 8740 Chromoly, 200,000 Psi Tensile Strength, 2-Bolt Main, Chevy, Big Block, Kit

Part Number: PQX-1045422

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Estimated Ship Date: Feb 20, 2026 if ordered today

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Main Studs, 4-Bolt, Ford, 351C, with Milodon Caps, Windage Tray, Kit

Part Number: MIL-81170

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Estimated Ship Date: Mar 16, 2026 if ordered today

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

Part Number: MIL-81183

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 16, 2026 if ordered today

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Main Studs, 4-Bolt, Ford, 351C, with Milodon Caps, Kit

Part Number: MIL-81169

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Estimated Ship Date: Mar 16, 2026 if ordered today

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

Part Number: MIL-81129

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Estimated Ship Date: Mar 16, 2026 if ordered today

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