ERR4699 - Boost Pipe Assembly

- €49,20

€49,20

€49,20 - €49,20

€49,20

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

Brand PR2 Allmakes OE

Boost Pipe Assembly for the 2.5L 300 TDi turbo diesel, part of the turbocharger boost control circuit.

It connects the inlet manifold to the injection pump's boost control diaphragm, carrying turbocharger boost pressure so that fuelling is adjusted in proportion to manifold pressure. A sound, leak-free pipe is needed for correct boost-dependent fuelling; leakage causes under-fuelling and loss of power under load.

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 Diesel Turbo, boost control pipe (Manifolds)
DISCOVERY 1 1989-1998 — 2.5L 300 TDi, from VIN FA393361 to WA799999
RANGE ROVER CLASSIC 1992-1994 — 2.5L TDi, from VIN JA610294

Alternative Codes

ERR4699

In stock 2 units

2 · Gouda 0 · 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 does the boost pipe assembly do on a 300 TDi?

The boost pipe assembly connects the inlet manifold to the injection pump's boost control diaphragm on the 2.5L 300 TDi turbo diesel. It carries turbocharger boost pressure to the pump so fuelling is adjusted in proportion to manifold pressure, giving correct boost-dependent fuelling under load.

What happens if the boost pipe leaks?

A leaking boost pipe causes under-fuelling and a noticeable loss of power under load on the 300 TDi. The injection pump can't see full manifold pressure, so it won't add the fuel the engine needs as the turbo builds boost. A sound, leak-free pipe restores correct fuelling.

Which models and VIN ranges does this boost pipe fit?

This boost pipe fits the Defender 2.5L 300 TDi (1987-2006), Discovery 1 2.5L 300 TDi from VIN FA393361 to WA799999, and Range Rover Classic 2.5L TDi from VIN JA610294. Check your VIN against these ranges to confirm the correct application.