Part number lookup
4TN78T-RJ Replacement Parts
Cross-reference and compare 3 replacement listings for OEM / aftermarket part number 4TN78T-RJ. Use the product cards below to review price, availability, and fitment before ordering.
3 Matching Products
Part Numbers and Cross References
Applications and Fitment Summary
- Yanmar · Yanmar Engine John Deere JD50 50 Excavator Item Included: - 1set Full gasekt kit - 4pcs Piston, STD size. Bore size =78mm - 4pcs Piston Pin - 8pcs Pin Clips - 4 Intake Valves - 4 Exhaust Valves - 8 Valve Guides - 4 Intake Valves Seats - 4 Exhaust Valves Seats - 4set Ring set for 4pistons, STD size - 4pcs Liner Cylinder/Sleeve, Semi-finished type - 1set Crankshaft bearing STD size - 1set Connect Rod Bearing, STD size - 1set Thrust washer, STD Size.
- Yanmar · Yanmar Engine John Deere JD50 Excavator Item Included: - 1set Full gasekt kit - 4pcs Liner Cylinder/Sleeve - 4pcs Piston, STD size - 4pcs Piston Pin - 4set Ring set for 4pistons, STD size - 8pcs Pin Clips - 8pcs Valves (4pcs Intake Valves + 4pcs Exhaust Valves) - 8pcs Valve Guides - 8pcs Valves Seats ( 4pcs Intake Valves Seats+ 4pcs Exhaust Valves Seats) - 1set Crankshaft bearing STD size - 1set Connect Rod Bearing STD size - 1Set Crankshaft Thrust washer
- John Deere · Yanmar Engine John Deere JD50 50 Excavator
Frequently Asked Questions
What parts replace OEM number 4TN78T-RJ?
This page lists 3 replacement listings indexed under 4TN78T-RJ. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for 4TN78T-RJ?
Match the stamped part number first, then verify machine model, engine code, serial number, mounting points, and photos of your old part before checkout.
Can I request a quote if 4TN78T-RJ is not an exact match?
Yes. Use the fitment inquiry form with your machine plate, engine model, and photos. Support can review alternatives or cross references.