5-87814401-J Engine Cylinder Liner Kit for ISUZU TFR 4JA1T Diesel Cylinder Sleeve Set

The Cylinder Liner Kit with OEM number 5-87814401-J is a verified direct-fit replacement for the ISUZU 4JA1T diesel engine, primarily installed in TFR/TFS pickup models. This liner set is a critical component of the engine block assembly, providing the precision-worn cylinder surface against which the piston rings seal during combustion. Without healthy liners, compression escapes, oil consumption rises, and the engine loses power.

• ✅ Dimensional Verification: Liner bore and outer diameter tolerances checked against OEM specification using CMM (Coordinate Measuring Machine). Each production batch retains dimensional inspection records traceable to the OEM drawing.
• ✅ Material Hardness Confirmed: Liner material hardness tested per ISO 6506 (Brinell) to ensure adequate wear resistance for diesel combustion cycles. Hardness values recorded per heat lot.
• ✅ Fitment Validation: Designed as a direct replacement for OEM liner part numbers associated with the 4JA1T block. Cross-referenced against ISUZU parts catalog data for TFR/TFS applications.
• ✅ OEM Cross-Reference: Replaces 5-87814401-J and interchangeable references including 5-87814401-0 / 5878144010. (Note: Always verify against your engine's serial number before ordering.)

• Excessive blue/white smoke from exhaust indicating oil burning past worn rings/liners
• Noticeable loss of compression and reduced power output
• High oil consumption without external leaks
• Cylinder wall scoring or vertical scratches visible upon inspection
• Piston slap or abnormal knocking under load

• This kit is NOT compatible with the HITACHI EX200-5 excavator's original 6BG1T engine. The EX200-5 uses a 6-cylinder 6.5L engine, while this kit is for the 4-cylinder 2.8L 4JA1T.
• Engine variations exist across markets and production years. Always confirm your engine code (stamped on the block) and preferably provide VIN/chassis number before ordering.
• Liner sets may include pistons and rings in some configurations — verify kit contents with the seller before purchase if you need a complete rebuild set.

1. Clean cylinder block bore thoroughly; remove carbon deposits and old sealant.
2. Check block deck flatness and liner bore dimensions against OEM specification.
3. Apply approved liner sealant to the lower sealing surface per manual.
4. Press liner into block squarely using proper driver tool; do not distort the liner.
5. Measure liner protrusion above deck — must meet OEM specification (typically 0.05–0.10 mm range; confirm exact value in manual).
6. Install pistons and rings per manufacturer procedure; check ring end gaps.
7. Torque head bolts to OEM specification in the correct sequence.

• Inspect compression and oil consumption every 50,000 km or annually for light commercial use.
• Replace liner set when compression falls below OEM minimum, oil consumption exceeds acceptable limits, or cylinder wall scoring is detected during overhaul.