Motorcycle Engine
Colony
#9631-1 Oil Pump Stud Nut Short 1941-1948 Harley-Davidson 74/80 SV 1941-1954 45's - Parkerized
$5.58
Colony
#9525-1 Oil Pump Check Valve Plug 1936-1980 Harley-Davidson Big Twin 1937-Up UL/45s - Parkerized
$9.56
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#8940-2 Swingarm Pivot Bolt Cover Red Reflectors 1986-1999 Harley-Davidson FXST/FLSH - Chrome Plated
$24.62
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#8870-21 Lower Motor Mount Kit Acorn Head 1986-1992 Harley-Davidson Sportster - Chrome Plated
$33.67
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#8864-4 Oil Filter Adaptor Screw Kit Allen Head 1986-Up Harley-Davidson Sportster - Chrome Plated
$10.76
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#9950-6 Oil Hose Cover Mounting Allen Kit 1999-Up Harley-Davidson Twin Cam Dyna/FLT - Chrome Plated
$4.38
Colony
#9949-6 Oil Hose Cover Mounting Acorn Kit 1999-Up Harley-Davidson Twin Cam Dyna/FLT - Chrome Plated
$9.96
Colony
#9947-8 Electrical Panel Cover Mounting Acorn Kit 1991-Up Harley-Davidson Dyna - Chrome Plated
$11.96
Colony
#2015-6 Oversize Valve Cover Screws 1948-1965 Harley-Davidson Panhead W/Steel D Rings - CAD Plated
$19.12
Colony
#9806-8 Oil Pump Mounting Bolt Kit Acorn Nut 1977-1990 Harley-Davidson Sportster - Chrome Plated
$15.14
Colony
#9805-10 Oil Pump Mounting Nut Allen Screw Kit 1954-1976 Harley-Davidson Sportster - Chrome Plated
$19.12
Colony
#9844-5 Chrome Countersink Washer Set for 7/16" Flat Head Socket Harley-Davidson - Chrome Plated
$19.93
Colony
#9828-16 Lifter Base Screw Kit 1/4-20 Oval Allen Harley-Davidson After Market Cases- Chrome Plated
$17.92
Colony
#9822-4 Oil Filter Adaptor Mounting Acorn Kit 1992-Up Harley-Davidson Big Twin - Chrome Plated
$7.96
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.