ISUZU N 1998.01-2001.12 NKR 69S, NPR 69M, NPR 69L (61KW,82PS) and 4JG2 4JG2-TC Cylinder Head Assy for Isuzu 8-97016-504-7 8-97086-338-2 – OEM 8-97016-504-7

Product Overview: This complete cylinder head assembly is engineered for the Isuzu 4JG2 and 4JG2-TC 3.1-litre four-cylinder diesel engines, a proven powerplant found in the Isuzu N-series light trucks, Trooper and Bighorn off-road vehicles and their Opel-badged derivatives. It is supplied as a fully assembled unit with valves, guides and seats installed and is machined to original equipment tolerances, making it a direct replacement for a cracked, warped or valve-damaged original head.

Key Features: The casting is produced from high-grade material and CNC-machined for accurate deck flatness, correct valve seat concentricity and matched combustion chamber volume. Valve guides and seats are pre-installed and honed for even sealing and balanced compression across all cylinders, and the injector seats and pre-chamber bores are precision machined for correct diesel combustion. Machined intake and exhaust flanges provide reliable gasket sealing, while reinforced casting sections improve thermal durability under continuous load.

Vehicle Compatibility: This head fits Isuzu N-series models (1998.01-2001.12) including NKR 69S, NPR 69M and NPR 69L (61 kW, 82 PS), Opel Monterey A 3.1 TD (1991-1998), Isuzu Trooper II (1991-1998), Opel Campo 3.1 TD (1992-2001) and Isuzu Bighorn II applications fitted with the 4JG2 engine. Confirm the engine code and OE reference before ordering.

Specifications: Engine code 4JG2 / 4JG2-TC; displacement 3.1 litres; inline four-cylinder diesel; material cast iron or aluminium; standard size; new condition; complete assembly; 12-month warranty; purpose replacement and repair.

OEM / Reference Numbers: 8-97016-504-7, 8-97086-338-2 and 8-97086-338-4. Cross-reference these numbers with the casting marks on the original cylinder head to confirm the correct variant is supplied.

Applications: Ideal for light commercial trucks, delivery vehicles, off-road SUVs and utility vehicles, covering fleet maintenance, workshop overhauls, engine rebuilds and repair work where a robust factory-specification diesel head is required.

Benefits / Replacement Information: Fitting this assembly restores compression, corrects coolant and combustion leakage caused by cracking or distortion, and removes the cost and delay of reconditioning the original casting. The complete assembly ensures matched valve and seat geometry for dependable long-term sealing.

Installation or Fitment Notes: Installation should be performed by a qualified technician. Verify block deck flatness, fit a new head gasket and new head bolts where specified, and torque in the correct sequence to the manufacturer's specification. Check valve clearances and injection pump timing after assembly, then pressure test and bleed the cooling system before road use.