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VXR Logo
High Flow Plenum - Z20LEx
Vauxhall Logo

Our new High Flow Plenum is designed for all 2.0 Turbo Z20LEx engines. The plenum has been designed to allow more air flow through its enlarged housing, which has a 25% larger cross sectional area than OE (original equipment). It has been cast in alluminium specifically to give it an OE look, but leaving the option open to have the item polished or powder coated as necessary. This plenum has been proven up to 400 bhp, where on these engines the inlet manifold becomes a restriction and further major changes have to then be made to the inlet manifold, throttle body and associated pipework.

The plenum can be supplied on its own with stud and nut kit, or with the required silicone hose(s) for the intended models as shown below.

Suitable for the following models:
Astra G and Zafira A - Z20LET
Astra H and Zafira B - Z20LEL/Z20LER
Astra and Zafira VXR - Z20LEH
VX220 Turbo - Z20LET

As used in the 2011 Dubai 24 Hour Race.

High Flow Plenum
High Flow Plenum

We will be offering this as a plenum with studs and nuts at £89.50 Buy Now Click Here! as shown in the image to the left and in the 3 kit options listed below.

High Flow Plenum
Next to OE Plenum
Our high flow plenum is available in the following 3 model specific kits:

Astra H and Zafira B 2.0 Turbo Inc VXR

Kit includes:
High Flow Plenum
Stud & Nut kit
Large bore 4 ply silicone hose - from plastic cross over pipe (next to battery) to new plenum.

Price £122.05
Buy Now Click Here!

Astra G and Zafira A

Kit Includes:
High Flow Plenum
Stud & Nut Kit
Large bore 4 ply silicone hose.
Polished Alloy transfer pipe (Replicates Astra H Mk5 set up)
Silicone hose from Intercooler to alloy transfer pipe (Replicates Astra H Mk5 set up)

Price £173.15
Buy Now Click Here!

VX220, Opel Speedster Turbo

Kit Includes:
High Flow Plenum
Stud & Nut Kit
Large bore 4 ply silicone hose, to fit from OE intercooler or charge cooler to new plenum.

Price £152.15
Buy Now Click Here!

Please Note: Plenums are now in stock and available. Most hose options are available from stock, however due to the combinations it may not be possible to hold everything for every model in every colour. If ordering online we will notify you by email if there is likely to be a delay with your order. The current prices will remain until all the original batch of plenums has been sold.

Images of Plenum Kits

Astra H/Zafira B Kit
High Flow Plenum
Astra G/Zafira A Kit
High Flow Plenum
VX220/Speedster Turbo Kit
High Flow Plenum

Images of High Flow Plenum Fitted

Images below show high flow plenum fitted to Astra H VXR Turbo with different colour silicone hoses.
High Flow Plenum High Flow Plenum High Flow Plenum High Flow Plenum

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Courtenay Sport Vauxhall Tuning
Courtenay Sport
 Vauxhall Tuning

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