Full Engine Gasket Set 1878108680 1878108681 6HE1 Overhaul Gasket Kit

Product Specification

1878108680,1878108681 6HE1 Overhaul Full Gasket Kit 

1. Quick Notice

Confirm your engine code (6HE1 or 6HE1-TC) before ordering. This overhaul full gasket kit carries cross-references 1878108680 and 1878108681 — both numbers reference the same complete gasket set. Designed for Isuzu FVR trucks and other 6HE1-powered vehicles. Professional installation required. Use new cylinder head bolts and follow factory torque specifications.

2. Description

The 1878108680 / 1878108681 is a complete engine overhaul gasket kit specifically engineered for Isuzu 6HE1 and 6HE1-TC diesel engines. The Isuzu 6HE1 is an inline 6-cylinder, 4-cycle, water-cooled, direct-injection OHC diesel engine. Key engine specifications: 7,127 cc (7.1 L) displacement, 110 mm × 125 mm (4.33 in × 4.92 in) bore/stroke, 16.9:1 compression ratio, 230 PS (169 kW) maximum output at 2,500 rpm, and 667 N·m (68 kg·m) maximum torque at 1,500 rpm. This comprehensive overhaul gasket set includes cylinder head gasket, intake and exhaust manifold gaskets, valve stem oil seals, oil pan gasket, valve cover gasket, water pump gasket, timing cover gasket, fuel pump gasket, thermostat gasket, and all necessary seals for a full engine rebuild. Compatible with Isuzu FVR trucks, FSR, FTR33P, NQR, Isuzu LT1 bus chassis, and various heavy equipment powered by the 6HE1 engine including Hitachi excavator ZAX330. Common failure symptoms include external oil leaks, coolant loss without external leakage, compression loss leading to poor engine performance, exhaust smoke, and visible gasket material deterioration. Replacement restores factory sealing integrity across all mating surfaces, preventing cross-contamination of engine fluids and ensuring proper compression across all six cylinders.

3. Parameters Table

4. Custom Content

Multi-Layer Steel (MLS) Construction: The cylinder head gasket in this overhaul kit features MLS construction — multiple precision-stamped stainless steel layers bonded with elastomer coating. The embossed steel layers function as load-controlled springs, maintaining consistent sealing pressure across the cylinder head interface as components expand and contract at different rates during thermal cycling. This design provides superior resistance to blowouts and warping under the extreme cylinder pressures of turbocharged diesel operation, typically up to 1,700 psi or higher. Do not apply any additional sealant to MLS gaskets.

Comprehensive Kit Contents: This full overhaul kit includes all gaskets required for a complete engine rebuild. Key components include cylinder head gasket, exhaust manifold gasket (×2), intake manifold gasket (×2), front timing cover gasket, rear crankshaft oil seal (with removal tool), side cover gasket, oil pan gasket, valve cover gasket (×2), water pump gasket, fuel injection pump gasket, vibration damper gasket, gasket for oil dipstick guide tube, and various O-rings and seals. This eliminates compatibility issues and reduces downtime by providing every necessary gasket in one package.

5. FAQ

Q1: Are 1878108680 and 1878108681 the same gasket kit?
A1: Yes. 1878108680 and 1878108681 are cross-reference numbers for the same complete engine overhaul gasket set. Either number can be used when ordering. Both reference the Isuzu genuine gasket set designed for the 6HE1 engine.

Q2: What is the difference between the 6HE1 and 6HE1-TC engine variants?
A2: The 6HE1-TC adds a turbocharger with intercooler to the naturally aspirated 6HE1 base engine. Both variants share the same displacement (7,127 cc), bore/stroke (110 mm × 125 mm), and compression ratio (16.9:1), but the turbocharged 6HE1-TC delivers higher output — 230 PS (169 kW) at 2,500 rpm with 667 N·m torque at 1,500 rpm. This overhaul gasket kit fits both naturally aspirated and turbocharged variants.

Q3: What is included in this full overhaul gasket kit?
A3: This comprehensive kit includes cylinder head gasket, intake and exhaust manifold gaskets, valve stem oil seals, oil pan gasket, valve cover gasket, water pump gasket, timing cover gasket, fuel pump gasket, thermostat gasket, and all necessary seals for a complete engine rebuild.

Q4: Which vehicles use the Isuzu 6HE1 engine?
A4: The 6HE1 engine is found in Isuzu FVR medium/heavy trucks, FSR, FTR33P, NQR trucks, Isuzu LT1 bus chassis, and industrial equipment including Hitachi ZAX330 excavators.