Engine Blocks & Parts

Expansion or Freeze Plug Kit, Brass, 1.625 in. Or 1-5/8 in., Unviversal, Set of 10

Part Number: SUM-G1587

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Estimated Ship Date: Today

Engine Block, Summit, Big Block Chevrolet, Bare, Cast Iron, 4-bolt Main Bolt Style, 9.800 in. Standard Deck, 4.600 in. Bore, Each

Part Number: SUM-150211

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Estimated Ship Date: 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: Dec 5, 2025 if ordered today

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

Part Number: MIL-81130

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Estimated Ship Date: Dec 5, 2025 if ordered today

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Main Studs, 4-Bolt, Pontiac 389-455, Center Studs, Kit

Part Number: MIL-81222

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Estimated Ship Date: Dec 5, 2025 if ordered today

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

Part Number: MIL-81131

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Estimated Ship Date: Dec 5, 2025 if ordered today

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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: Dec 5, 2025 if ordered today

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

Part Number: MIL-81134

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Estimated Ship Date: Dec 5, 2025 if ordered today

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BB ChevyMerlin with Windage Tray Main Studs

Part Number: MIL-81136

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Estimated Ship Date: Dec 5, 2025 if ordered today

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

Part Number: MIL-81139

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Estimated Ship Date: Dec 5, 2025 if ordered today

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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

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Estimated Ship Date: Dec 5, 2025 if ordered today

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Main Cap Fasteners, Two Bolt Caps with Windage Tray, 8740 Chrome Steel Studs, 4130 Heat Treated Steel Washers and Nuts, Holden, V8, Kit

Part Number: MIL-81146

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Estimated Ship Date: Dec 5, 2025 if ordered today

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

Part Number: MIL-81166

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Estimated Ship Date: Dec 5, 2025 if ordered 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: Dec 5, 2025 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: Dec 5, 2025 if ordered today

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Main Cap Fasteners, Two Bolt Caps, 8740 Chrome Steel Studs, 4130 Heat Treated Steel Washers and Nuts, Mopar R3 Small Block LA, Kit

Part Number: MIL-81180

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Estimated Ship Date: Dec 5, 2025 if ordered today

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Main Caps, Ductile Iron, 3-Center, Straight Outer Bolts, 4-Bolt, Chevy, Small Block, Set

Part Number: MIL-11165

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Estimated Ship Date: Dec 5, 2025 if ordered today

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Main Caps, Ductile Iron, 3-Center, Angled Outer Bolts, 4-Bolt, 400 Main, Chevy, Small Block, Set

Part Number: MIL-11180

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Dec 5, 2025 if ordered today

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Main Caps, Ductile Iron, 3-Center, Angled Outer Bolts, 4-Bolt, Pontiac, 421, 428, 455, Set

Part Number: MIL-11520

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Estimated Ship Date: Dec 5, 2025 if ordered today

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Main Caps, Angled Side Bolt, Ductile Iron, CNC Machined, Holden, V8, Kit

Part Number: MIL-11570

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Estimated Ship Date: Dec 5, 2025 if ordered today

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REAR MAIN SEAL HOUSING

Part Number: NAL-12705665

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Estimated Ship Date: Jan 5, 2026 if ordered today

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

Part Number: NAL-19433406

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Rear Main Seal Housing, Aluminum, Natural, Chevrolet Performance LSX Block, Each

Part Number: NAL-19369274

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Engine Expansion Plugs

Part Number: NAL-10241154

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Engine Expansion Plug, Brass, 1.625 in. O.D., Each

Part Number: NAL-94673017

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Estimated Ship Date: Jan 5, 2026 if ordered today

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