- SKU: 4TNA78
4TNA78 4TNB78 Rebuild Kit For Yanmar engine FX285 FX305 FX335 Tractor
High quality aftermarket parts for reliable performance.
Every purchase is backed by our commitment to product quality.
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This rebuild kit contains components for servicing the listed Yanmar applications. Verify the part number and application before ordering.
Part Numbers: 4TNA78, 4TNB78
Application:
for 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
Order Processing & Handling Time
Before an item is shipped, it must be processed and inspected at our warehouse.
• Standard Processing Time: Orders are typically processed within 3–5 business days (Monday to Friday, excluding holidays).
• Tracking Updates: Once your order has been handed over to the carrier, you will receive a shipping confirmation email containing your tracking number.
Inventory & Stock Availability
We categorize our products to give you the most accurate delivery estimates:
• In-Stock Items: These items are physically present in our warehouse and ready for immediate dispatch. These orders are prioritized for the fastest shipping, normally within 24 hours.
• Out of Stock: If an item is temporarily out of stock, we will notify you via email with an estimated restock date.
• Split Shipments: If your order contains both in-stock and out-of-stock items, we may ship the available items first to avoid delays.
For more details, please check our Shipping Policy.
Warranty Claims
If you believe the parts you purchased is defective, please follow this procedure.
• Process: Contact our Technical Support by submitting a support request through our website.
• Assessment: Our Technical team will review your issue to determine if the parts is covered under warranty. If approved, we will provide you with return instructions and issue a refund upon receiving the returned item. Alternatively, we can exchange and resend a new one with your consent.
Standard Return (Non-Warranty)
For returns not related to defects (e.g., ordered the wrong part, no longer needed), the following terms will apply:
Eligibility Requirements:
• Time Frame: You must contact us within 90 days of the delivery date to initiate a return.
• Condition: Parts must be in their original, unopened packaging and in new, unused condition.
• Restrictions: Genuine parts are non-returnable; Parts that have been installed, modified, or show signs of use are also not eligible for return.
Refunds & ExchangesOnce we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
• Approved Refunds: A credit will automatically be applied to your original method of payment.
◦ PayPal: Refunds are typically processed within 1 business day.
◦ Credit/Debit Cards: We will process the refund immediately and send you notification. However, please allow 5–10 business days for the funds to appear in your account, depending on your bank's processing times.
• Exchanges: If you requested an exchange, the replacement part will be shipped once the return is received and verified.
For more details, Please view our Return & Exchange Policy