Complete Engine Oil Seal Kit Fit Yamaha IT175 YZ 100 125 DT MX 125 175 74-83 US

Complete Engine Oil Seal Kit for Yamaha

This complete engine oil seal kit for Yamaha contains all necessary seals to block engine oil leaks and maintain crankcase compression.

Overview

The complete engine oil seal kit for Yamaha is designed for engine builders and riders conducting a full engine overhaul. This complete engine oil seal kit for Yamaha replaces worn, dried, or cracked seals around the crankshaft, transmission, and shifter shafts. It ensures that air and oil remain separated to preserve proper engine vacuum and prevent oil leaks.

Built For Performance

• Formulated from high-quality rubber compounds that resist oil, heat, and fuel
• Precision double-lip designs provide positive sealing against rotating shafts
• Resists extreme crankcase pressures in high-revving two-stroke engines
• Includes all major external and internal oil seals for a total rebuild

Fits These Machines

• for Yamaha IT175 1974-1983
• for Yamaha YZ100 1974-1983
• for Yamaha YZ125 1974-1983
• for Yamaha DT125 1974-1983
• for Yamaha DT175 1974-1983
• for Yamaha MX125 1974-1983
• for Yamaha MX175 1974-1983

On-The-Job Use

• Sealing the crankshaft and transmission shafts during a complete engine rebuild
• Stopping oil leaks from the shifter shaft or kickstarter shaft
• Preventing air leaks that lean out two-stroke fuel mixtures

Specs At A Glance

Good To Know

Q: Why is it critical to replace crankshaft seals on two-stroke engines? A: Leaking crank seals allow air to enter the combustion chamber, leading to a dangerously lean air-fuel ratio that can cause engine seizure.

Q: Should I lubricate the seals before installing them? A: Yes, applying a light coat of clean engine oil or assembly grease to the seal lips prevents damage during dry starts.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.