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Engines & Components

Engines & Engine Parts

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Engines & Engine Parts

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched...

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your...

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your daily driver.

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Individual Parts

Results 1 - 25 of 2000 +

Gen. 3/4 Chevy LS Rocker Arm Trunnion Upgrade Kit, Bronze Bushing, Retrofit, Rectangle and Cathedral Port Rockers, Set of 16

Part Number: SUM-141560

4.33 out of 5 stars ( 70 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arm; Ultra Pro Magnum; Rocker Arm; Stud 7/16 in. Ratio 1.7 in.; Chevy Big Block 396-454 cid; 16 pc.

Part Number: CCA-1620-16

4.95 out of 5 stars ( 37 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Roller Bearing Trunnion, L92/LS9/LS3, Assembled, Heavy Duty Cast Steel, 1.7 Ratio, Rectangle Port, Chevy, Set of 16

Part Number: SUM-141554

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arm Trunnion Upgrade Kit, Needle Bearing, Chevy, LS, Kit

Part Number: BTC-TK002NB

4.0 out of 5 stars ( 14 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Super-Street, Stud Mount, Full Roller, Aluminum, Narrow Body, 1.5 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16

Part Number: PRO-66907

4.36 out of 5 stars ( 36 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, 1.6 Ratio, 7/16 in. Stud, Full Roller Design, Aluminum, Small Ford and 351W, Set of 16

Part Number: TFS-51400520

4.67 out of 5 stars ( 15 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Stud Mount, Full Roller, Aluminum, 1.6 Ratio, Fits 3/8 in. Stud, Ford, Small Block/351W, Set of 16

Part Number: SUM-G6940B

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Fits 7/16 in. Stud, Full Roller, Steel, 1.70 Ratio, Chevy, Big Block, Set of 16

Part Number: CCA-1820-16

4.27 out of 5 stars ( 11 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, 1.5 Ratio, 3/8 in. Stud, Full Roller, Stainless Steel, Natural, Small Chevy, SBC, Set of 16

Part Number: SUM-G6990

4.72 out of 5 stars ( 18 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arm, Replacement, Stamped Steel, Chrysler, Dodge, Jeep, Ram, Volkswagen, V6, Each

Part Number: MEL-MR-1332

4.92 out of 5 stars ( 12 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arm Trunnion Upgrade Kit, Needle Bearing Style, Chevy, Small Block LS, Kit

Part Number: BTC-BTRTK001

4.36 out of 5 stars ( 67 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, 1.7 Ratio, 7/16 in. Stud, Full Roller, Stainless Steel, Polished, Big Block Chevy, BBC, Set of 16

Part Number: SUM-G6995

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Shaft, Roller, 1.7 Ratio, for LS3 Heads, Chevy, 6.2L, Kit

Part Number: BTC-S0432

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Roller Tip/Bronze Bushed Rockers, 1.76 Ratio, Aluminum, Shafts, End Supports, Ford, Big Block, FE, Kit

Part Number: CSP-S4006BKE

4.44 out of 5 stars ( 9 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Stud Mount, Roller Tip, Grooved Pivot Balls, Stamped Steel, 1.5 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16

Part Number: SUM-141506

4.54 out of 5 stars ( 74 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Stud Mount, Full Roller, Aluminum, 1.7 Ratio, Fits 7/16 in. Stud, Chevy, Big Block, Set of 16

Part Number: SUM-G6930B

4.91 out of 5 stars ( 11 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Ultra Pro Magnum, 7/16 in. Stud Mount, Chromoly Steel, 1.6 Ratio, Ford, Small Block, Set of 16

Part Number: CCA-1632-16

4.92 out of 5 stars ( 24 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, 1.73 Ratio, 7/16 in. Stud, Full Roller Design, Aluminum, Ford 351C, 351M/400, and 429/460, Set 16

Part Number: TFS-53400621

4.11 out of 5 stars ( 9 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Stud Mount, Roller Tip, Chromoly Steel, 1.52 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16

Part Number: CCA-1412-16

4.32 out of 5 stars ( 41 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Heavy-Duty Roller Rockers, Full Roller, 1.5 Ratio, Aluminum, Orange Anodized, Chrysler, Dodge, Plymouth, Big Block, Kit

Part Number: CSP-S70015KE

4.83 out of 5 stars ( 12 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Roller Fulcrum, Shaft Mounting Style, 1.7 Ratio, Steel, Chevrolet, 5.7L, 6.0L, Kit

Part Number: BTC-S0410

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arm, Standard Replacement, Steel, Chevrolet, LS, Each

Part Number: MEL-MR1341

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, Roller Tip, Cast Steel, 3/8 in. Stud Mount, 1.5 Ratio, Polylocks, Chevy, Small Block, Set of 16

Part Number: SUM-141706PL

4.46 out of 5 stars ( 50 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Rocker Arms, 1.6 Ratio, 3/8 in. Stud, Full Roller Design, Aluminum, Small Block Ford, Set of 16

Part Number: TFS-51400510

4.88 out of 5 stars ( 17 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air