Part number lookup
4TNA78 Replacement Parts
Cross-reference and compare 1 replacement listing for OEM / aftermarket part number 4TNA78. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.
1 Matching Product
Part Numbers and Cross References
Applications and Fitment Summary
- Part Number
- Yanmar · Yanmar 4TNA78 4TNB78 Engine FX285 FX305 FX335 Tractor
- Yanmar · f or Yanmar engine FX285 FX305 FX335 Tractor 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
- Yanmar · Yanmar 4TNA78 Engine FX335DPT Tractor Content: 1 Set of Overhaul Gasket Kit 1 Set Cylinder Liners (Semi-finished product) 1 Set Pistons STD 1 Set Piston Pins 1 Set Snap Rings 1 Set Rod Bushings 1 Set Rings Pistons STD 1 Set of Main Bearings 1 Set of Rod Bearings 1 Set of Thrust Washer 1 Set Intake/Exhaust Valves 1 Set Valve Guides 1 Set Intake/Exhaust Valves Seats
Frequently Asked Questions
What parts replace OEM number 4TNA78?
This page lists 1 replacement listing indexed under 4TNA78. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for 4TNA78?
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 4TNA78 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.