Description
Nothing ruins an engine rebuild faster than skipping the small parts that make the biggest difference. Piston pin bushings might look simple, but they’re the critical connection between your pistons and connecting rods. When these bushings wear out, you get knocking, power loss, and eventually catastrophic engine damage. This complete set gives you everything you need to restore proper clearances and get your engine running like new again.
What You’re Getting
- Complete set of bushings for all four cylinders in your 3.9L diesel
- TISCO construction built to handle the heat and pressure of diesel operation
- Precise tolerances that match factory specifications for proper oil clearance
- Proven replacement for hard-to-find original parts
Built for Real Farm Work
These bushings are designed for the demanding 4-390, 4T-390, and 4TA-390 CDC-B series engines found in a wide range of agricultural equipment. Whether you’re rebuilding the engine in your combine, tractor, or other farm machinery, these bushings restore the tight clearances these hardworking diesels need to deliver reliable power season after season.
Made to Last
TISCO parts are built for the kind of abuse farm equipment takes every day. These bushings are engineered to handle the constant reciprocating motion, high temperatures, and combustion pressures that diesel engines dish out. Quality materials and precise manufacturing ensure they’ll maintain proper clearances through thousands of hours of operation.
Installation Notes
Installation requires proper reaming to achieve final bore dimensions—any competent machine shop can handle this work. Always replace all bushings as a set during rebuild, and check connecting rod condition while you’re at it. Proper torque specs and assembly procedures are critical for long engine life.
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