CHEVROLET IMPALA Chevrolet Performance Engines & Components

Connecting Rod Bolt, Steel, 12mm Hex Head, 9mm x 1.00, 1.654 in. Underhead Length, Gen IV LS Engine, Chevy, Each

Part Number: NAL-11570662

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/19/2026

Main Bolts, 6-Bolt Main, Inner Bolts, Chevy, 4.8, 5.3, 5.7, 6.0L, Each

Part Number: NAL-12560272

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/19/2026

Valve Cover Bolts, Steel, Chevy Small Block, L92, Each

Part Number: NAL-12577215

4.87 out of 5 stars ( 15 )

Estimated Ship Date: Monday 1/19/2026

Cylinder Head Dowel Pin, Chevy, Small Block, LS Engines, Each

Part Number: NAL-12570326

4.83 out of 5 stars ( 18 )

Estimated Ship Date: Monday 1/19/2026

Crankshaft Key, Long Type, 0 degree Offset, Steel, Natural, Chevy, Each

Part Number: NAL-12561513

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/19/2026

Bellhousing, Transmission Dowel Pin, .621 in. Diameter, Straight, 1.188 in. Length, GM, L92/LS, Each

Part Number: NAL-12720455

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Valve Spring Retainers, Steel, Stock, Each

Part Number: NAL-10166344

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/19/2026

Roller Lifter Guide, Composite, Each

Part Number: NAL-12550002

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/19/2026

Grommet, PCV, Valve Cover, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: NAL-3989350

4.88 out of 5 stars ( 33 )

Estimated Ship Date: Monday 1/19/2026

Engine Expansion Plug, Brass, Buick, Cadillac, Chevy, GMC, Hummer, Oldsmobile, Pontiac, Saab, Saturn, Each

Part Number: NAL-9427693

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/19/2026

Head Bolt, 11mm, Hex, Cadillac, Chevy, Small Block Chevy, LS, Each

Part Number: NAL-19258707

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Valve Lock, 7 degree, Stamped Steel, 1-groove Beadlock-style, 8mm Stem Diameter, Each

Part Number: NAL-10166345

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Valve Spring, L76/L92 Style,.520 Max lift, Single Beehive, 1.290 in. o.d., 1.230 in. Coil Bind, 1.800 in. Installed Height, Each

Part Number: NAL-12706568

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Connecting Rod Bolt, OE Style, Hex Head, 16mm Thread Length, Steel Construction, Natural Finish, Each

Part Number: NAL-11570825

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Valve Spring, Single, 1.241 in. Outside Diameter, 1.700 in. Installed Height, Each

Part Number: NAL-94666580

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Valve Lock, Replacement, 0.185 in. Stem Diameter, Stock Style Lock, 2-Groove, Steel, Buick, Cadillac, Chevy, GMC, Hummer, Oldsmobile, Pontiac, Each

Part Number: NAL-90354648

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/19/2026

PISTON PIN RETAINER

Part Number: NAL-12569638

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Valve Spring Retainer, Steel, Stock, Each

Part Number: NAL-14003974

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Valve Spring Retainer, Replacement, OEM Style, Steel, Standard, 0.732 in. OD, 0.299 in. ID, 0.059 in. Thick, Buick, Cadillac, Chevy, GMC, Hummer, Each

Part Number: NAL-12575196

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Valve Lock, Stamped, Steel, Stock, 1-Groove, 11/32 in. Valve Stem, Chevy, Small Block, Each

Part Number: NAL-24503856

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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FILTER

Part Number: NAL-12585328

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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filter

Part Number: NAL-12731179

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Head Bolt, 7/16-14 in., Hex, Chevy, GM V6, Each

Part Number: NAL-10168527

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

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BOLT/SCREW, CYL HD

Part Number: NAL-19352499

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

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Oil Pan Drain Plugs

Part Number: NAL-11562588

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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• Special Order