Nissan Patrol GQ GU TB42 4.2L Cylinder Head Complete

Complete TB42 Cylinder Head — Ready to Install

Brand new complete TB42 cylinder head for Nissan Patrol GQ and GU with 4.2L 6-cylinder petrol engine. Supplied with valves, springs, retainers, seals, gasket set and head bolts fitted. Professionally assembled and pressure tested. A popular rebuild part for the iconic Patrol 4WD.

Fits: Nissan Patrol GQ, GU (1987–1997) — Engine code TB42, 4.2L 6-cylinder petrol. Also suits Ford Maverick with TB42 engine.

Important: The TB42 is an OHV pushrod engine — the camshaft and rocker gear are located in the engine block, not the cylinder head. This complete head includes valves, springs, retainers and seals only. No camshaft or rockers are required with this head.

What's Included:

• Brand new complete cylinder head assembly
• Valves, springs, retainers & seals fitted
• Head gasket set
• Torque-to-yield (TTY) stretch bolts (single-use)
• ✓ Free Delivery: Available to most Australian addresses — Perth pickup also available

Key Specifications:

• Engine Code: TB42 — 4.2L 6-cylinder petrol
• Valve configuration: 12-valve OHV (pushrod)
• Bolt type: Torque-to-yield (TTY) stretch bolts (single-use)
• Quality: Premium aftermarket
• ✓ Warranty: 12 months

Compatibility Guide

Guide only — please contact us if you are unsure.

• 1987–1997: Nissan Patrol GQ with 4.2L 6-cylinder petrol, engine code TB42
• 1987–1997: Nissan Patrol GU with 4.2L 6-cylinder petrol, engine code TB42

Order online or by phone. Pickup available in Perth (Midland) or fast dispatch from Melbourne.

Frequently Asked Questions

Why is there no camshaft listed in What's Included?
The TB42 is an OHV (overhead valve) pushrod engine. Unlike modern SOHC or DOHC engines, the camshaft sits in the engine block — not in the cylinder head. Your original camshaft and rocker gear remain in the block and are not affected by a head replacement.

Why choose a complete assembled head over a bare casting?
Arrives fully assembled and pressure tested — valves seated and seals fitted. No machine shop required, saving significant time and labour cost.

Related products: TB42 Cylinder Head Assembled | TB42 Head Gasket Set with Bolts | Browse all Nissan TB42 Parts