2003 Chevrolet Performance Engines & Components

Valve Spring Retainers, Steel, Stock, Each

Part Number: NAL-10166344

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

Oil Pan Bolt, Steel, Gold Iridite, GM, 4.8, 5.3, 5.7, 6.0, 6.2, 7.0L, Each

Part Number: NAL-12554990

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 1/5/2026

Windage Tray, Louvered, Steel, Natural, Rear Sump, Chevy, 5.7L, 6.0L, Each

Part Number: NAL-12558189

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/5/2026

Camshaft Retainer Plate, Steel, Chevy, 350, 2nd Design, 3.294 Bolt Center, ZZ3-ZZ4, Each

Part Number: NAL-10168501

4.75 out of 5 stars ( 12 )

Estimated Ship Date: Monday 1/5/2026

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 1/5/2026

Lifter Link Bar, Tappet Guide, Hydraulic Roller, OE Style, 2.86 in. Long, Alloy Steel, Chevy, 7.4, 8.1L, 8.2L, Each

Part Number: NAL-12551397

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

Valve Spring, LS6 Style,.550 Max lift, Single Beehive, 1.290 in. o.d., 375 lbs./in. Spring Rate, 1.800 in. Installed Height, Each

Part Number: NAL-12713265

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

Pushrod, Replacement, 5/16 in. Diameter, 7.325 in. Length, Chevy, LS, Each

Part Number: NAL-10238852

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

Oil Cooler Delete Plate, Aluminum, Natural, Chevy, 5.7L LS, 6.0L LS, Each

Part Number: NAL-12577903

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 1/5/2026

Oil Pump Fastener, Bolt, Hex Head, 7/16 in.-14 Threads, 2 3/8 in. Long, Steel Material, Black Finish, Chevrolet, Each

Part Number: NAL-10046007

3.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 1/5/2026

Engine Block, LSX Bowtie, Bare, Cast Iron, 6-bolt Main Bolt Style, 9.240 in. Standard Deck, Chevrolet, Each

Part Number: NAL-19417352

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

• Free Shipping

Oil Cooler Delete Plate, Aluminum, Natural, Chevy, LS, 5.7L, Each

Part Number: NAL-12551587

4.4 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/5/2026

Camshaft, Hydraulic Roller Tappet, Duration at .050 in. 196/201, Lift .467/.479, Chevy, LS1, LQ9, Each

Part Number: NAL-12561721

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/5/2026

• Free Shipping

Engine Coolant Plug Fastener, Bolt, Internal Allen Head, 27mm x 1.00 Thread Size, 17mm Allen Head Size, Chevy, Small Block LS, LT, Each

Part Number: NAL-11611351

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

Bolt, Oil Pan, Front Cover, Oil Pump, Hex-Head, Steel, Natural, Chevy, LS, Each

Part Number: NAL-11515758

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

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 1/5/2026

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 1/5/2026

Oil Dipstick Plug, Driver Side Plug, Chevy, 5.0, 5.7L, Each

Part Number: NAL-14091563

2.25 out of 5 stars ( 16 )

Estimated Ship Date: Monday 1/5/2026

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

Part Number: NAL-19258707

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

Pushrod, Steel, Fits Second GM Design with Roller Cam, Chevy, Small Block, Each

Part Number: NAL-10241740

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

Engine Coolant Plug Fastener, Bolt, Internal Allen Head, 28mm x 1.25 Thread Size, Steel, Natural, Chevy, Small Block LS, Each

Part Number: NAL-12561663

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/5/2026

Oil Filter Adapter, Steel, Natural, Chevy, GMC, 4.3L, Each

Part Number: NAL-14081300

4.97 out of 5 stars ( 34 )

Estimated Ship Date: Monday 1/5/2026

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 1/5/2026

Bolt, Accessory Drive Component, Chevrolet, LS3/LS7, 10mm x 1.5, Each

Part Number: NAL-11515768

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

Dowel Pin, Camshaft Dowel Pin, Each

Part Number: NAL-12554553

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/5/2026