ERR6621 - Plenum Inlet Gasket – EFI V8

- €7,40

€7,40

€7,40 - €7,40

€7,40

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Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.

Plenum Inlet Gasket seals the joint between the upper plenum chamber and the lower inlet manifold on the EFI Rover V8 engine.

It forms the air-tight seal across the plenum-to-manifold face, preventing unmetered air leaks that would disturb the fuel injection mixture and idle quality. Fitted to the Rover V8 EFI petrol engine.

Vehicle Model Land Rover Discovery 2 1998-2004 (L318)
Range Rover Classic 1994-2001 (P38)

Fitment Notes DISCOVERY 2 1998-2004 — V8 EFI Petrol. Gasket, upper inlet manifold (plenum) to lower inlet manifold
RANGE ROVER P38 1994-2001 — 4.0L and 4.6L V8 EFI Petrol (incl. LC variants). Gasket, upper inlet manifold (plenum) to lower inlet manifold

Alternative Codes

ERR6621ERR6621R

In stock 25 units

25 · 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 ERR6621 plenum inlet gasket seal on an EFI V8?

The ERR6621 gasket seals the plenum chamber to the inlet manifold on 4.0L and 4.6L EFI V8 engines, preventing air leaks into the intake tract. Air ingress here upsets fuel mixture and idle quality. It fits the Discovery 2 (V8 petrol) and Range Rover P38 (1994-2001).

What are the symptoms of a leaking plenum gasket on a V8?

A leaking plenum gasket typically causes rough idle, hesitation under throttle, and a hissing or weak vacuum at the intake. On EFI V8 Land Rovers, unmetered air past the plenum seal can trigger lean mixture conditions and poor throttle response.

Does this gasket fit the Range Rover P38 diesel engine?

No. ERR6621 fits V8 EFI petrol engines only, specifically the 4.0L and 4.6L units. It doesn't fit the P38 with the 2.5L BMW diesel, which has a completely different inlet manifold design.