JZX1039L - SU Carburettor Needle Jet Guide – V8

- €9,30

€9,30

€9,30 - €9,30

€9,30

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

Genuine: Original manufacturer part. This product is the original part designed and produced by the vehicle manufacturer.

SU Carburettor Needle Jet Guide is a fuel-metering component of the twin SU carburettor fitted to the 3.5L V8. It locates and supports the needle jet within the carburettor body, holding it concentric to the tapered metering needle so fuel is drawn evenly as the needle rises and falls in the jet.

Accurate alignment of the jet guide is essential to consistent fuelling; wear or misalignment here disturbs the air/fuel mixture across the carburettor's operating range.

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 — 3.5L V8 Twin SU Carburettor, LH & RH
DISCOVERY 1 1989-1998 — 3.5L V8 Twin SU Carburettor (VIN FA393361-WA799999)
RANGE ROVER CLASSIC 1986-1991 — V8 Twin SU Carburettor, LH & RH

Alternative Codes

JZX1039L

In stock 2 units

0 · Gouda 2 · 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 SU carburettor needle jet guide do?

The needle jet guide locates and supports the needle jet inside the SU carburettor body on the 3.5 V8. It holds the jet concentric to the tapered metering needle so fuel is drawn evenly as the needle rises and falls, which keeps the air/fuel mixture consistent across the rev range.

What are the signs the needle jet guide is worn?

Wear or misalignment in the jet guide upsets the air/fuel mixture, so symptoms typically include uneven running, poor idle and inconsistent fuelling on the twin-SU V8. Because the guide holds the jet concentric to the needle, any play here disturbs metering and carburettor balance.

Which Land Rover models does this needle jet guide fit?

It fits the 3.5 V8 twin-SU carburettor on the Defender 1987 to 2006, Discovery 1 1989 to 1998 (VIN FA393361 to WA799999) and Range Rover Classic 1986 to 1991. These use matched LH and RH carburettors, so check your VIN and carburettor side when ordering.