ERR3342 - Rocker Arm – Exhaust – 300TDi – LH

- €9,10

€9,10

€9,10 - €9,10

€9,10

Tip: Log in to your account to unlock volume discounts on this item.

OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.

Exhaust Valve Rocker Arm - a valvetrain component in the rocker shaft assembly of the 2.5L 300 TDi turbo-diesel engine.

Mounted on the rocker shaft, it transfers pushrod motion driven by the camshaft to open the exhaust valve. This is the left-hand exhaust rocker in the rocker set.

Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic up to 1994

Fitment Notes DEFENDER 1987-2006 — 2.5L 300 TDi, exhaust valve rocker, LH
DISCOVERY 1 1989-1998 (from FA393361 to WA799999) — 2.5 Tdi EGR (Gem), 2.5L 300 Tdi, exhaust valve rocker, LH
RANGE ROVER CLASSIC 1992-1994 (from JA610294) — 2.5L 300 TDi, exhaust valve rocker, LH

Alternative Codes

ERR3342ERR3342R

In stock 26 units

19 · Gouda 7 · Drachten

Express delivery available

When will my order arrive?

Order before 15:00 (Mon–Fri): same-day dispatch for in-stock items.
UPS Express (order before 14:00): dispatched today, delivered tomorrow where available.
Netherlands / Belgium / Germany: 2–4 working days.
Other EU countries + UK: 4–8 working days.
Outside EU/UK: delivery times vary — contact us for an estimate.

Items may ship from multiple warehouses at no extra cost.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What is the ERR3342 rocker arm and what does it do?

The ERR3342 is the left-hand exhaust valve rocker arm for the Land Rover 2.5L 300 TDi turbo-diesel engine. Mounted on the rocker shaft, it transfers pushrod motion from the camshaft to open the exhaust valve. It's the exhaust rocker in the rocker shaft set.

Which Land Rovers does this 300 TDi rocker arm fit?

This 300 TDi exhaust rocker fits Land Rover models running the 2.5L 300 TDi engine, including the Defender, Discovery 1 (VIN FA393361 to WA799999) and Range Rover Classic (1992-1994, from JA610294). Confirm your engine is the 300 TDi, as the earlier 200 TDi typically uses different rockers.

Why do 300 TDi rocker arms wear out?

300 TDi rocker arms typically wear at the valve-tip contact pad and the shaft bore, usually from high mileage, infrequent oil changes or oil starvation. Worn rockers often cause tapping noise from the top of the engine and uneven valve clearances. They're commonly replaced as a set.

Is this rocker handed, and how many are on the engine?

This is the left-hand exhaust rocker. The four-cylinder 300 TDi uses separate inlet and exhaust rockers, so a full rocker shaft set holds several arms. If one is worn, mechanics typically inspect the rest of the set, since they share the same shaft and oil feed.