PONTIAC 6.6L/400 Engine Blocks & Accessories

Main Studs, 2-Bolt Main, Pontiac V8, Kit

Part Number: ARP-194-5401

4.64 out of 5 stars ( 11 )

Estimated Ship Date: Today

Engine Expansion Plugs, Freeze Plugs, Brass, Pontiac, Kit

Part Number: MEL-MPE-115BR

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Today

Main Studs, 4-Bolt Main, Pontiac V8, Kit

Part Number: ARP-194-5601

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Engine Expansion Plug, Steel, AMC, Buick, Cadillac, Chevy, Ford, GMC, Jeep, Mercury, Oldsmobile, Set of 10

Part Number: RNB-555-028

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

Camshaft Bolts, Engine Finishing, Cylinder Head Dowels, Timing Cover Dowel Pins, Pontiac V8, Kit

Part Number: CCA-238

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

Freeze Plugs, Steel, Set of 10

Part Number: RNB-555-025

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Engine Expansion Plugs, Standard Replacement, Steel, Includes Plugs for Block, Camshaft, Oil Galley, and Pipe Plugs, Pontiac V8, Kit

Part Number: MEL-MPE-115R

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Engine Expansion Plugs, Steel, 0.540 in. O.D., 0.180 in. Height, Buick, Chevy, Ford, GMC, Mercury, Set of 10

Part Number: RNB-555-007

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

Freeze Plugs, Brass, Pontiac V8, Kit

Part Number: PRO-66560

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

Cylinder Head Dowels, .310 in. Outside Diameter, .562 in. Height, Chevy/Mopar, Pair

Part Number: MRG-4375

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

Freeze Plug Kit, Brass, Pontiac, V8, Kit

Part Number: MIL-34046

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Main Caps, Billet Steel, 4-Bolt Conversion or Replacement, Straight, 326-400 cid, V8, Dowel Pinned, Drill Guide, Small Journal, Pontiac, Set of 3

Part Number: PQX-1738901

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Estimated Ship Date: Jan 12, 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: Feb 5, 2026 if ordered today

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Engine Expansion Plug, Steel, AMC, Buick, Cadillac, Chevy, Ford, GMC, Jeep, Mercury, Oldsmobile, Each

Part Number: RNB-555-028-1

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Timing Cover Dowel Pins, RESTOPARTS® Supplied Timing Cover Alignment Sleeves, Steel, Split Design, Pontiac, V8, Pair

Part Number: OPG-G240412

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Estimated Ship Date: Feb 6, 2026 if ordered today

Main Stud Kit

Part Number: PIO-855019

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Estimated Ship Date: Nov 28, 2025 if ordered today

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Expansion Plugs, Steel, Diameter 2.065 in., GM, Set of 10

Part Number: RNB-555-047

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Expansion Plugs, Steel, Diameter 1.959 in., Various, Each

Part Number: RNB-555-041

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Expansion Plugs, Brass, Diameter 0.947 in., Buick, Oldsmobile, Pontiac, Each

Part Number: RNB-565-016

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Estimated Ship Date: Today

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

Part Number: MIL-81222

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Estimated Ship Date: Feb 4, 2026 if ordered today

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Main Stud Kit

Part Number: PIO-855020

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

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Main Studs, 2-Bolt, Pontiac, 326-455, Kit

Part Number: MIL-81221

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 5, 2026 if ordered today

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EXP PLUG KIT

Part Number: PIO-PE-115

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

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Main Caps, Front Position, Straight, 4-bolt, Ductile Iron, Pontiac, 350, 389, 400, Each

Part Number: MIL-11506

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Estimated Ship Date: Feb 4, 2026 if ordered today

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Main Caps, Ductile Iron, 3-Center, Angled Outer Bolts, 4-Bolt, Pontiac, 350, 389, 400, Set

Part Number: MIL-11525

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