Skip to product information
SKU:
NLT1R01519
Ships for free in 2–4 business days.
Honda TRX400EX TRX400X Top-End Gasket Kit 06111-HN1-010
$22.99
In Stock
$22.99
Sale price
$22.99
Regular price
Top-end gasket set replacing Honda 06111-HN1-010 and related 400-series gasket numbers on compatible TRX400EX and TRX400X engines.
Estimated delivery between
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts 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
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- 1999–2008 Honda TRX400EX
- 2009 Honda TRX400X
- 2012–2014 Honda TRX400X
Product Overview
Oil seepage at the head or cylinder, compression loss, a planned piston service, or an engine already opened for cam work can call for new top-end gaskets. A gasket will not correct warped surfaces, loose studs, cracked castings, excessive crankcase pressure, or worn piston and valve parts.
The set reseals the cylinder, head, covers, and related upper-engine joints included in the package. Compare every opening and thickness to the removed pieces, and confirm whether valve-stem seals, exhaust gaskets, O-rings, or tensioner seals needed for your job are actually pictured.
Key Features & Performance
- Top-end sealing package for matching Honda 400 engines
- Cross-references 06111-HN1-010 and earlier gasket-set families
- Supports cylinder, piston, head, or camshaft service
- Includes the head, base, cover, and related gaskets shown
Replaces Part Numbers
- 06111-HN1-010
- 06111-KCY-673
- 06111-KCY-670
Common Uses
- Resealing a top end during piston or cylinder service
- Replacing a leaking head or base gasket after surface checks
- Completing cam-chain or cylinder-head work with fresh seals
- Repairing oil leakage from covered upper-engine joints
Technical Specifications
- Product Type: Top-End Engine Gasket Kit
- Engine Family: Honda TRX400EX / TRX400X
- Model Years: 1999–2009 and 2012–2014 listed applications
- Condition: New aftermarket
- Contents: Verify every needed seal against package photos
Installation & Fitment
- Identify the source of leakage and check head and cylinder flatness
- Remove old material without gouging aluminum and clean bolt holes and oil passages
- Compare gasket thickness, bore, oil holes, cam-chain opening, and all included seals
- Use the Honda tightening order and stages, set cam timing and valve lash, and recheck for leaks
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model, production date, serial number, electrical or fuel-system version, dimensions, installed options, and previous repairs can affect fitment. Compare the original part and application information before purchase.
Frequently Asked Questions
Q: Does this kit include every seal in the engine? A: No. It is a top-end set; verify valve seals, O-rings, exhaust gaskets, and any cover seals needed for your exact job.
Q: Can a new head gasket seal a warped head? A: Not reliably. The head and cylinder surfaces must be inspected and machined or replaced if outside specification.
Q: How do I confirm fitment before ordering? A: Match the original reference number where available, then compare the removed part, dimensions, connections, mounting details, model, serial or production information, and package photos.
Q: Is this an original-equipment part? A: No. This is a new aftermarket part. Brand names and reference numbers are used only to identify compatible applications.
Part Summary
keywords: Honda 06111-HN1-010 gasket kit, TRX400EX top end gaskets, TRX400X head gasket set, 400EX oil leak repair, Honda cylinder base gasket, 06111-KCY-673 replacement
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.