Motorcycle Engine
Colony
#3049-7 Chain Oiler Adjusting Screw Kit 1932-E1950 Harley-Davidson Twins 1932-1957 45's - Parkerized
$12.09
Colony
#9836-5 Chrome Countersink Washer Set for 3/8" Flat Head Socket Harley-Davidson - Chrome Plated
1
$16.73
Colony
#9835-8 Chrome Countersink Washer Set for 5/16" Flat Head Socket Harley-Davidson - Chrome Plated
$16.73
Colony
#8225-8 Rocker Shaft End Plug & Cap Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 XL - CAD Plated
2
$31.81
British Standard
Rocker Cover Washers - 4 Pack - Triumph Unit 500 650
5
$7.55
British Standard
Inner Gearbox Gasket for Unit 650 and 750 Triumph Motorcycles OEM #57-7012 or 71-3096
8
$7.45
Colony
#9960-1 Oversize Plated Allen Timing Plug 11/16"-16 Threads Harley-Davidson OEM #720 - Chrome Plated
3
$9.56
Cometic Gasket Inc.
Cam Change Gasket Kit - 1993-99 Harley-Davidson Big Twin
$26.20
Cometic Gasket Inc.
Cam Change Gasket Kit - 1970-92 Harley-Davidson Big Twin
$26.20
Colony
#9523-1 Oil Pump Check Valve Plug 1936-1980 Harley-Davidson Big Twin 1937-Up UL/45s - Chrome Plated
2
$12.74
Colony
#8860-8 Cylinder Base Stud Spacer 1978-1984 Harley-Davidson Shovelhead OEM #16836-78 - Chrome Plated
1
$24.98
Colony
#8736-24 Valve Cover Screws 1954-1965 Harley-Davidson Panhead With Steel D-Rings - Chrome Plated
$24.71
Colony
#8772-2 Timing Cover Oil Passage Bolt 1963-1969 Harley-Davidson Big Twin OEM #25218-63 - CAD Plated
$11.96
British Standard
Points Cover Gasket Triumph Twins and Singles
9
$5.83
Colony
#8931-16-P Rocker Cover Smooth Allen Kit 1985-Up Harley-Davidson FL/FX 1986-Up XL - Chrome Plated
$23.01
Colony
#2222-11-P Cam Cover Smooth Allen Screw Kit 2004-Up Harley-Davidson Sportster - Chrome Plated
$23.01
British Standard
Engine and Transmission Lock Tab Set - 1963 - 1972 Triumph 650 with 4 Speed Gearbox
14
$22.95
Colony
#9100-8 Cylinder Base Nut Set 1978-1984 Harley-Davidson Shovelhead OEM #16838-78 - Chrome Plated
2
$22.75
Colony
#2650-13 Top Motor Mount Hardware 1957-E1972 Harley-Davidson XL 1952-1972 Big Twin - Parkerized
1
$21.78
Colony
#7604-7 Upper Motor Mount Kit Acorns Nut 1936-1984 Harley-Davidson OHV Big Twins - Chrome Plated
4
$21.52
James Gaskets
Points Cover Gasket 1971-1978 Harley-Davidson Big Twin
1
$1.34
The Heart of Your Build: Custom Motorcycle Engine Parts
The engine is the soul of your motorcycle, and keeping it running strong is what it's all about. Whether you're rebuilding a classic ironhead motor for sale you just scored or boosting the pe...
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Motorcycle Engine FAQ
I found a Sportster engine for sale. What are the first things I should check or replace?
When starting with a used engine of unknown history, it's wise to at least perform a top-end refresh. This typically includes new gaskets, checking cylinder and piston tolerances, and inspecting the valve train. This gives you peace of mind and a reliable starting point.
What are the easiest ways to get more power from my stock Sportster engine?
The most common and effective "Stage 1" upgrades are improving airflow. This means installing a high-flow air cleaner and a less restrictive exhaust system. These two changes allow the engine to breathe more freely and will deliver a noticeable performance gain without ever opening up the motor itself.
I'm rebuilding my engine. How important is it to replace all the hardware?
While not always strictly necessary, it's highly recommended. Engine hardware is subject to countless heat cycles and stress, which can cause it to stretch and weaken over time. Using new, high-quality head bolts, case bolts, and other hardware ensures proper torque specs and a leak-free, reliable engine for years to come.