Engines & Components
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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.
Rocker Arm Stud Girdle, Aluminum, Red, 7/16 in.-20 Thread, Chevy, Small Block, Kit
Part Number: CCA-4004
Estimated Ship Date: Today
Estimated Ship Date: Today
Mercury Marine 500, 525EFI - Internal Balance Damper
Part Number: INW-4004
Not Yet Reviewed
Estimated Ship Date: Aug 11, 2025 if ordered today
Estimated Ship Date: Aug 11, 2025 if ordered today
Cylinder Head Studs, Pro Series, Hex Head, Ford, 351C, 351M, 400, Kit
Part Number: ARP-154-4004
Estimated Ship Date: Today
Estimated Ship Date: Today
Wrist Pin Lock, Steel, Spirolox-Style, .042 in. Thick, 1.013 in. Outside Diameter, Each
Part Number: ROS-4004-D
Estimated Ship Date: Today
Estimated Ship Date: Today
Wrist Pin Retainer, SpiroLox, for .975 in. Pin Diameter, .042 in. Width, Each
Part Number: ROS-4004-E
Estimated Ship Date: Today
Estimated Ship Date: Today
Oil Pump, R4, Dry Sump, Four Stage, Standard Volume, Standard Rotation, Left Side Mount, Rear Drive, Each
Part Number: PFF-04-4004
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
S&S Cycle 58-99 BT Right Main Bearing
Part Number: SSY-31-4004
Not Yet Reviewed
Estimated Ship Date: Aug 27, 2025 if ordered today
Estimated Ship Date: Aug 27, 2025 if ordered today
Countershaft seal kit
Part Number: ALB-25-4004
Not Yet Reviewed
Estimated Ship Date: Aug 20, 2025 if ordered today
Estimated Ship Date: Aug 20, 2025 if ordered today
Spiro-loxs 1.500-1.569 Pin Dia
Part Number: ROS-4004-S
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
STUD GIRLDE BAR FOR CS (1)
Part Number: CCA-4004B-1
Not Yet Reviewed
Estimated Ship Date: Sep 29, 2025 if ordered today
Estimated Ship Date: Sep 29, 2025 if ordered today
Wrist Pin Lock, Steel, Spirolox-Style, .050 in. Thick, 1.138 in. Outside Diameter, Each
Part Number: ROS-4004-F
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
Wrist Pin Lock, Steel, Spirolox-Style, .050 in. Thick, 1.205 in. Outside Diameter, Each
Part Number: ROS-4004-G
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
Wrist Pin Lock, Steel, Spirolox-Style, .042 in. Thick, .840 in. Outside Diameter, Each
Part Number: ROS-4004-J
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
Spiro-loxs 1.901-1.959 Pin Dia
Part Number: ROS-4004-Z
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
Wrist Pin Lock, Steel, Spirolox-Style, .042 in. Thick, .931 in. Outside Diameter, Each
Part Number: ROS-4004-B
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
CYLINDER HEADS
Part Number: PTP-4004-16
Not Yet Reviewed
Estimated Ship Date: Oct 13, 2025 if ordered today
Estimated Ship Date: Oct 13, 2025 if ordered today
Rocker Arm, 3/8 in. Stud Mount, Full Roller, Aluminum, 1.6 Ratio, AMC, 290-401, Each
Part Number: CSP-4004-1
Not Yet Reviewed
Estimated Ship Date: Oct 22, 2025 if ordered today
Estimated Ship Date: Oct 22, 2025 if ordered today
Rocker Arms, Full Roller, Aluminum, 1.6 Ratio, Fits 7/16 in. Stud, AMC, 290-401, Each
Part Number: CSP-4004-7-1
Not Yet Reviewed
Estimated Ship Date: Oct 22, 2025 if ordered today
Estimated Ship Date: Oct 22, 2025 if ordered today
Rocker Arms, AMC V8
Part Number: CSP-4004-77-1
Not Yet Reviewed
Estimated Ship Date: Oct 22, 2025 if ordered today
Estimated Ship Date: Oct 22, 2025 if ordered today
Wrist Pin Lock, Steel, Spirolox-Style, .042 in. Thick, .873 in. Outside Diameter, Each
Part Number: ROS-4004-H
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
Wrist Pin Lock, Steel, Spirolox-Style, .050 in. Thick, 1.271 in. Outside Diameter, Each
Part Number: ROS-4004-K
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
Wrist Pin Lock, Steel, Spirolox-Style, .042 in. Thick, .943 in. Outside Diameter, Each
Part Number: ROS-4004-L
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
Spiro-loxs .707-.730 Pin Dia.
Part Number: ROS-4004-M
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
Wrist Pin Lock, Steel, Spirolox-Style, .050 in. Thick, 1.339 in. Outside Diameter, Each
Part Number: ROS-4004-N
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
Spiro-loxs .890-.944 Triple lo
Part Number: ROS-4004-P
Not Yet Reviewed
Estimated Ship Date: Sep 8, 2025 if ordered today
Estimated Ship Date: Sep 8, 2025 if ordered today
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