Engine Gasket Sets

Engine Overhaul Gasket Kit for Cummins 4B 4BT 4BTA 4B3.9 S4D102 3.9L 12-Valve Diesel Engine

Name: Engine Overhaul Gasket Kit for Cummins 4B 4BT 4BTA 4B3.9 S4D102 3.9L 12-Valve Diesel Engine
Brand: XAVORNIK
SKU: GKT-CUM-4BT
Price: 109.00 USD
Availability: InStock

USD $109.00

SKU GKT-CUM-4BT Reference 3921393, 4089648, 3802375

Available Fast U.S. fulfillment via Amazon

Item priceUSD $109.00

Fulfilled in the U.S. through Amazon Multi-Channel Fulfillment. Orders are typically prepared for fulfillment by the next business day. Delivery timing varies by destination and fulfillment service.

XAVORNIK 3921393 4089648 3802375 overhaul gasket kit for selected Cummins 4BT/4B3.9 3.9L 12V engines. Verify serial number and gasket layout.

3-Month Limited WarrantySupport after delivery

Fitment VerificationPart number & machine details

Worldwide ShippingOptions at checkout or quote

Reference part number: 3921393, 4089648, 3802375
XAVORNIK SKU: GKT-CUM-4BT

Verified product data

Fitment & package details

Machine models: Selected industrial equipment | generators | pumps | compressors and construction machinery using a confirmed 4B | 4BT | 4BTA | 4B3.9 or S4D102 engine configuration
Engine models: Cummins 4B | 4BT | 4BTA | 4B3.9 | selected Komatsu S4D102 cross-reference configurations | 3.9L | 4-cylinder | 12-valve mechanical diesel
Condition: New aftermarket replacement
Package: 1

Product information

Product details

Fitment-first replacement: New XAVORNIK engine overhaul gasket kit for selected Cummins 4B, 4BT, 4BTA and 4B3.9 3.9L 12-valve mechanical diesel configurations; selected S4D102 applications only after physical comparison.

Reference Numbers

3921393, 4089648, 3802375

Reference numbers are provided for product identification and cross-reference searches. They do not confirm compatibility by themselves.

Engine Fitment

Cummins 4B, 4BT, 4BTA, 4B3.9; selected Komatsu S4D102 cross-reference configurations; 3.9L, 4-cylinder, 12-valve mechanical diesel

Typical Equipment Applications

Industrial equipment, generators, pumps, compressors and construction machinery using a confirmed compatible engine. Equipment model alone does not confirm compatibility.

Package Contents

1 complete engine overhaul gasket kit as shown in the product images, including the cylinder head gasket and assorted upper/lower gaskets and seals supplied in the actual kit.
Pistons, piston rings, liners, bearings, pumps, injectors, head bolts and other hard engine parts are not included.
Materials and individual pieces can vary by gasket position and production batch.

Check Before Ordering

Match the original or reference part number when available.
Confirm the complete engine model, suffix and serial number from the data plate.
Compare the head-gasket shape, cylinder bore openings, bolt holes, oil/water passages and every included piece with the product images.
Not for 6BT/6BTA 5.9L engines. Engine suffix, serial range and gasket layout can change the required kit.

Installation and Warranty

Professional installation is required. Dry-fit and inspect every gasket before assembly. The 3-month limited warranty covers verified manufacturing defects; installed or used parts and damage caused by incorrect fitment, installation or engine condition are not covered.

XAVORNIK is an independent replacement-parts brand and is not affiliated with the referenced equipment or engine manufacturers. Manufacturer names and part numbers are used only to identify compatibility.

Order & Fitment Confirmation

You may place the order before final fitment confirmation. After checkout, our team will contact you to verify the required information. Fulfillment will remain on hold and will not be released until compatibility is confirmed.

BEFORE ORDERING

Help us verify the right part

Model lists are references only. Different configurations may use different parts.

Original or reference part number
Complete engine model, including suffix
Machine make and model
Equipment serial number, VIN or PIN where applicable
Clear photo of the original part label or data plate
Clear photos of the original part and gasket layout where applicable

Installation & return notice

This product is covered by a 3-month limited warranty from the date of delivery for confirmed manufacturing defects. Unused and uninstalled items may be returned subject to the XAVORNIK Returns & Refund Policy. Installed, contaminated, damaged or incomplete gasket sets are not returnable unless a manufacturing defect is confirmed.

Damage or incompatibility caused by an incorrect engine model, engine version or serial number, incorrect gasket selection, improper surface preparation, incorrect torque or tightening sequence, reuse, overheating, lubrication or cooling-system failure, contamination, chemical sealants or incorrect assembly is not covered.

Frequently asked questions

How do I confirm fitment?

Match the original part number, the relevant engine or machine model, and any required serial information. Compare the product dimensions, mounting points and other fitment details shown on the product page. Contact XAVORNIK before ordering if you are unsure.

What should be checked before installation?

Inspect the product for damage and confirm that the supplied components and physical configuration match your application. Follow the product-specific instructions and the relevant installation specifications. Do not install a damaged or incompatible product.

What does the warranty cover?

3-Month Limited Warranty

The limited warranty covers confirmed manufacturing defects. Normal installation or use does not, by itself, cancel the right to submit a manufacturing-defect claim.

See our Return, Refund and Limited Warranty Policy for warranty periods, coverage, exclusions and claim procedures. The limited warranty is separate from the 30-day non-defective return request window.