Engine

 
1 - 31 of 31 items
Heavy-Duty Connecting Rod Set for 41-47  74" Knucklehead Wrist Pin Bushings for 36-47 Knucklehead
Heavy-Duty Connecting Rod Set for 41-47 74" KnuckleheadWrist Pin Bushings for 36-47 Knucklehead

For 41-47 74" Knucklehead; .791" wrist pin High-quality, heavy-duty rod set comes complete and ready to install Set includes front and rear rods, crankpin and nuts, steel cages and roller bearings Rods are forged and heat-treated, .120" wider...

Machined from solid bronze bar stock Hold concentricity to less than .0002" Lead-in edge for easy installation Sold in pairs Made in the U.S.A.

$447.95

$32.95

Rod Race Set for 36-47 Knucklehead Rod Race and Bushing Set for 41-47 Knucklehead
Rod Race Set for 36-47 KnuckleheadRod Race and Bushing Set for 41-47 Knucklehead

Made from 52100 aerospace-quality Timken® bearing stock Sold as a set Made in the U.S.A.

Used to rebuild S&S and stock connecting rods Includes hardened steel rod bearing races and bronze wrist pin bushings Requires finish sizing after installation Made in the U.S.A.

$67.95

$58.95

Crankpin Nut/Lock Kit for 41-47 Knucklehead Left-Side Crankcase Bushing
Crankpin Nut/Lock Kit for 41-47 KnuckleheadLeft-Side Crankcase Bushing
  • Includes nuts, locks and screws, OEM #s 23966-54A, 23971-78, 2660
  • Made in the U.S.A.

For 40-47 Knucklehead/Flathead, std.; repl. OEM #24621-40

$33.95

$66.95

Pinion Shaft Assembly for 39-47 Knucklehead Motor Sprocket Nut for 30-47 Knucklehead/Flathead
Pinion Shaft Assembly for 39-47 KnuckleheadMotor Sprocket Nut for 30-47 Knucklehead/Flathead
  • Includes shaft, nut and keys
  • Made in the U.S.A.
  • OEM replacement style
  • Sold each
  • Made in the U.S.A.

$146.95

$10.95

Flywheel Thrust Washer Set for 29-47 Knucklehead/Flathead Rocker Cover Nut Strip Kit for 36-47 Knucklehead
Flywheel Thrust Washer Set for 29-47 Knucklehead/FlatheadRocker Cover Nut Strip Kit for 36-47 Knucklehead
Set includes flywheel thrust washers in 11 different thicknesses, ranging from .064" to .102" Sold in sets of 11 Made in the U.S.A.Eight strips, four gaskets and 34 screws are included in the kit All holes are tapped for easy installation Made in the U.S.A.

$48.95

$56.95

Nitrided Valves for 36-47 Knucklehead Cast Iron Intake/Exhaust Valve Seats
Nitrided Valves for 36-47 KnuckleheadCast Iron Intake/Exhaust Valve Seats
One-piece stainless-steel, stellite-tipped valves impregnated by a special nitrided process with .002" depth and .0002" surface buildup to improve wear properties and reduce friction This process provides resistance to corrosion; wears superior...Machinability, wear and thermal conductivity surpasses all standards 1.945" O.D., 1.500" I.D. and 0.450" height Compatible with all fuel blends Sold each Made in the U.S.A.

$29.95

$12.95

Complete Valve Spring Kit for 36-47 Knucklehead Valve Keys for 36-47 Knucklehead
Complete Valve Spring Kit for 36-47 KnuckleheadValve Keys for 36-47 Knucklehead
Designed for maximum performance Features interference-wound, double-chrome silicone springs; heat-treated steel base washers .415" lift Includes steel retainers Made in the U.S.A.Made of a special chromoly material Hardened and coated with black oxide for durability and longer wear Made in the U.S.A. NOTE: Not for use with thin-stem valves.

$151.95

$31.95

Tappet Adjusting Screws for 36-47 Knucklehead Tappet Adjuster Locknuts for 38-47 Knucklehead
Tappet Adjusting Screws for 36-47 KnuckleheadTappet Adjuster Locknuts for 38-47 Knucklehead
  • Sold each
  • 9/32"-32 threads
  • Made in the U.S.A.
Split locknuts with 9/32"-32 thread Sold in four-pack Made in the U.S.A.

$6.95

$8.95

Tappet Roller Kit for 29-47 Knucklehead/Flathead Upper Pushrod Tube Cover Kit for 40-47 Knucklehead
Tappet Roller Kit for 29-47 Knucklehead/FlatheadUpper Pushrod Tube Cover Kit for 40-47 Knucklehead
Made from 52100 bearing material Includes 4340 chromoly axle Sold each Made in the U.S.A.Upper cover kit contains chrome clips, chrome cups, springs, rubber seals and steel washers for four pushrod tubes Made in the U.S.A.

$30.95

$48.95

"N" Grind Cam for 37-47 Knucklehead Engines "S" Grind Cam for 37-47 Knucklehead Engines
"N" Grind Cam for 37-47 Knucklehead Engines"S" Grind Cam for 37-47 Knucklehead Engines

Stock Knuckle replacement cam For stock motors and restoring an older classic engine, this is the cam to use Made in the U.S.A. Intake: Open: 13 degrees /Close: 44 degrees /Duration @.053: 234 degrees /Valve Lift: .348 Exhaust Open: 47 degrees...

"S" GRIND CAM Bolt-in performance cam Smooth idle, strong pull to 6000 rpm This cam is the Knuckle equivalent of a "B" cam in a Pan/Shovel motor Made in the U.S.A. Intake: Open: 27 degrees /Close: 55 degrees /Duration @.053: 262 degrees /Valve...

$176.95

$176.95

Cam Cover Bushing for 36-47 Knucklehead Cam Bushing Kit for 36-47 Knucklehead
Cam Cover Bushing for 36-47 KnuckleheadCam Bushing Kit for 36-47 Knucklehead

Bushing is made from solid bronze bar stock Machined in one operation with a tolerance of .0002" Feature a lead-in for ease of installation Sold each Made in the U.S.A.

Kit includes cam and gear shaft bushings/bearings, along with lock pins and thrust plate, OEM #s 275, 25551-36, 35581-36, 25582-36, 25597-36, 25785-30A Made in the U.S.A.

$24.95

$78.95

Idler Gear and Circuit Breaker Bushings/Studs Circuit Breaker Shaft Kit for 36-47 Knucklehead
Idler Gear and Circuit Breaker Bushings/StudsCircuit Breaker Shaft Kit for 36-47 Knucklehead
Idler gear bushings for37-73 45" Flathead, 37-48 74" Flathead, 37-41 80" Flathead; idler gear bushings and circuit breaker bushings for 36-47 Knucklehead Made in the U.S.A
  • Circuit breaker shaft kit consists of a shaft and two replacement bushings
  • Made in the U.S.A.

$18.95

$40.95

Pinion Shaft Bushing for 36-47 Knucklehead Generator Crankcase Gear Kit
Pinion Shaft Bushing for 36-47 KnuckleheadGenerator Crankcase Gear Kit
  • Quality pinion shaft bushing; sold individually
  • Made in the U.S.A.

Include circuit breaker drive gear, idler gear assembly and circuit breaker shaft gear with shims Circuit breaker gear shaft and idler gear shaft sold separately standard clockwise rotation Made in the U.S.A.

$31.95

$555.95

Air Ramp for S&S Breather Gears for 36-47 Knucklehead Oil Pump Gasket Kit for 36-47 Knucklehead
Air Ramp for S&S Breather Gears for 36-47 KnuckleheadOil Pump Gasket Kit for 36-47 Knucklehead
Increases cfm flow by approximately 80% Helps remove more air and oil from the crankcase Made in the U.S.A.

Made in the U.S.A.

$44.95

$11.95

Oil Pump Drive Shaft Bushing for 36-47 Knucklehead Billet Oil Pump Kit for 36-47 Knucklehead
Oil Pump Drive Shaft Bushing for 36-47 KnuckleheadBillet Oil Pump Kit for 36-47 Knucklehead
  • Sold each
  • Made in the U.S.A.

Kit includes oil pump, universal cover with top and bottom feeds, mounting bolts, supply and return gears, drive shaft with keys and snap rings, check ball and spring, pressure relief valve and spring, check ball and release valve cover screws...

$27.95

$350.95

Motor Mount Bolt Kit for 36-47 Knucklehead
Motor Mount Bolt Kit for 36-47 Knucklehead
Kit includes top motor mount bolt, OEM #16865-52; two 3/8"-24 x 31/4" bolts, OEM #4434W; two front engine mounting bolts, OEM #24791-36; three 3/8" x 7/64" washers, OEM #6400HB; three castle nuts, OEM #7809; three cotter keys, OEM #534; one motor...

$50.95

1 - 31 of 31 items