Skip to product information
Ships in 2–4 business days.
Honda TRX 350 4x4 Top End Gasket Kit 1986-1989 FourTrax Engine Seal Set
$54.99
Sale price
$54.99
Regular price
Available to order.
This Honda TRX 350 4x4 Top End Gasket Kit is a valvetrain and engine seal component compatible with Honda FourTrax 350 models from 1986-1989.
Fast & FREE Shipping! Estimated delivery between
Not sure which part fits your equipment?
Our parts team can help you find the right replacement. Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT | Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Product Overview
This Honda TRX 350 4x4 Top End Gasket Kit provides a complete set of seals and o-rings necessary for a top-end engine rebuild. Engineered as a direct replacement for factory hardware, this Honda TRX 350 4x4 Top End Gasket Kit restores reliable compression and optimal engine performance. This durable kit is designed for DIY mechanics and professional shops working on classic ATVs.
Key Features & Performance
- Includes head and base gaskets along with all necessary top-end seals
- Constructed from premium materials to withstand high thermal stress
- Ensures a tight, reliable seal to prevent critical engine oil leaks
- Direct replacement configuration requires no modifications for installation
Fitment & Compatibility
- Honda FourTrax 350 TRX350 4x4 (1986-1989)
Common Uses
- Rebuilding the top end of an ATV engine during routine maintenance
- Replacing a blown head gasket to restore cylinder compression
- Sealing engine components after performing a standard top-end inspection
Technical Specifications
- Vehicle Make: Honda
- Vehicle Model: FourTrax 350 TRX350 4x4
- Vehicle Years: 1986-1989
Frequently Asked Questions
Q: Does this kit include everything needed for a full top-end engine rebuild? A: Yes, it includes the essential head and base gaskets alongside necessary o-rings and seals to complete a top-end refresh.
Q: Is this gasket kit designed to meet original factory quality standards? A: Yes, the components are manufactured from high-quality materials to match or exceed OEM sealing performance and durability.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.