Motorcycle Engine
James Gaskets
Top End Gasket Kit 1973-1985 Harley-Davidson Sportster
5
$42.03
Lowbrow Customs
Rocker Box Oil Pressure Gauge Adapter Fitting - Chrome - 1971 - Up Harley-Davidson Shovelhead, 1971 - 1985 Sportster
9
$30.51
James Gaskets
Top End Gasket Kit 1948-1965 Harley-Davidson Panhead
2
$40.59
James Gaskets
Complete Motor Gasket Kit - Shovelhead 1966 - 1984
8
$116.17
James Gaskets
Complete Motor Gasket Kit - Sportster 900cc 1957 - 1971
1
$114.43
Colony
#2091-12 Replacement Pushrod Covers Late 1979-1984 Harley-Davidson Shovelhead - Chrome Plated
2
$70.39
Gasbox
Top Motor Mount - 2007-up Harley-Davidson Sportster - With EFI Coil and Stock Ignition Switch Mounts
11
$49.95
Colony
#7927 Complete Show Bike Kit Acorn Hardware 1994-2003 Harley-Davidson Sportster - Chrome Plated
$196.98
Gates Corporation
1/4 inch Black Fuel / Oil Line - By The Foot
10
From
$10.59
Gates Corporation
5/16 inch Black Fuel / Oil Line - By The Foot
11
From
$11.18
Lowbrow Customs
Rocker Box Oil Pressure Gauge Adapter Fitting - Brass - 1971 - Up Harley-Davidson Shovelhead, 1971 - 1985 Sportster
8
$30.51
Colony
#2233-12 Rocker Arm Shaft Washer O-Ring Kit 1966-1984 Harley-Davidson Shovelhead 1957-1984 XL
23
$6.05
James Gaskets
Primary Cover Gasket 1965-1988 Harley-Davidson Big Twin
$24.91
Colony
#9772-22 Lower Motor Mount Allen Screw Kit 1986-1998 Harley-Davidson Sportster - Chrome Plated
1
$33.84
British Standard
Engine Oil Seal Kit - 7 Piece - 1963 - 1972 Triumph Unit 650
21
$56.39
Lowbrow Customs
FiltroMax Big Twin Bracket - Tumbled
11
$32.10
Colony
#8225-8 Rocker Shaft End Plug & Cap Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 XL - CAD Plated
2
$31.81
SRM Engineering
SRM Oil Pressure Release Valve for pre unit Triumphs
5
$127.04
Lowbrow Customs
Rocker Box Oil Pressure Gauge Adapter Fitting - Chrome - 1966 - 1970 Harley-Davidson Shovelhead, 1957 - 1970 Sportster
2
$30.51
Colony
#8714-20 Big Bore Headbolt & Washer Kit 1949-Up Harley-Davidson Panhead/Shovelhead - Chrome Plated
2
$58.66
Colony
#2011-8 Head Bolt Set 12 Point 1985-1991 Harley-Davidson Big Twin 1986-1992 XL - Chrome Plated
2
$109.99
Colony
#2667-22-P Lower Motor Mount Allen Bolt Kit 1999-2003 Harley-Davidson Sportster - Chrome Plated
3
$35.87
Colony
#7137-22 High Crown Acorn Rocker Box Bolt Kit - 1966-1984 Harley-Davidson Shovelhead - Chrome Plated
4
$51.43
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.