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NLT1Q02496
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Complete Engine Gasket Set for Honda TRX400EX Sportrax 400 1999-2004
$22.99
In Stock
$22.99
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$22.99
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Complete aftermarket engine gasket set for 1999-2004 Honda TRX400EX FourTrax and Sportrax 400 applications.
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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
- Honda TRX400EX FourTrax 1999
- Honda TRX400EX FourTrax 2000
- Honda TRX400EX Sportrax 2001
- Honda TRX400EX Sportrax 2002
- Honda TRX400EX Sportrax 2003
- Honda TRX400EX Sportrax 2004
Product Overview
A full teardown should not go back together with flattened, heat-cycled gaskets. This set gathers the sealing pieces needed for a compatible TRX400EX top- and bottom-end rebuild, whether the engine was opened for oil leaks, low compression, a failed head gasket, or internal repair.
Kit contents vary among gasket-set manufacturers, especially oil seals and specialty washers. Compare every piece shown with the seals and gaskets your rebuild requires. Confirm the ATV is a 1999-2004 TRX400EX and not a later engine configuration before assembly.
Key Features & Performance
- Top- and bottom-end engine gasket assortment
- Covers major crankcase, cylinder, head, and cover sealing points
- Made for the 1999-2004 400EX engine family
- Useful for a complete engine teardown rather than a single external leak
- Supplied pieces should be checked against the listing image before assembly
Common Uses
- Reassembling an engine after top- and bottom-end repair
- Replacing a failed cylinder head or base gasket
- Stopping multiple age-related oil leaks during a rebuild
- Refreshing seals and O-rings after crankcase separation
Technical Specifications
- Product Type: Complete Engine Gasket Set
- Vehicle: Honda TRX400EX
- Years: 1999-2004
- Service Scope: Top and bottom end
- Condition: New
- Replacement Type: Aftermarket
Installation & Fitment
- Lay out and identify every gasket before engine assembly
- Measure head, cylinder, and cases for warpage and damage
- Remove old material without gouging aluminum sealing surfaces
- Use sealant only where the Honda service manual specifies
- Follow the exact torque sequence, fastener condition, and valve-clearance procedure
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, engine or equipment configuration, installed options, and previous repairs can affect fitment. Compare the original part, identifying numbers, dimensions, connections, and mounting details before purchase.
Frequently Asked Questions
Q: Is this only a top-end kit? A: No. It is listed as a complete top- and bottom-end gasket set for the 1999-2004 TRX400EX.
Q: Are oil seals included? A: Do not assume. Compare the pictured contents; complete gasket sets can be sold with or without dedicated oil-seal kits.
Q: Can new gaskets fix low compression? A: Only if leakage at a gasket is the cause. Worn rings, valves, cylinder damage, or incorrect timing require mechanical repair.
Q: Will it fit a later TRX400X? A: This listing is specifically written for 1999-2004 TRX400EX applications.
Part Summary
keywords: Honda TRX400EX gasket kit, 400EX complete engine gasket set, 1999-2004 Sportrax rebuild, TRX400EX head gasket replacement, Honda ATV bottom end gaskets, 400EX oil leak repair, aftermarket Honda engine gasket set
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.