Air and Fuel› Superchargers, Turbochargers and Components

Forge

Piston Recirculation Valve

$34.39

SKU: FMDVK04S-C

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Forge Motorsport Direct Fit Piston Recirculation Valve is a direct replacement for the original fitment. This piston design valve offers greater longevity than OEM diaphragm valves and can be fitted with different springs to accommodate increased boost pressure or engine modifications. The angled vacuum connection eases installation.
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The Forge FMDVK04S-C is a direct replacement piston design recirculation valve, designed to be an upgrade over factory valves. This valve provides greater longevity than OEM diaphragm valves and can be tuned with different springs to accommodate engine modifications or increased boost levels. For ease of installation, the top or vacuum connection is angled. This valve serves to release built-up air pressure when the throttle is released on a turbocharged car. Releasing this pressure quickly helps prevent the turbo from slowing down, thus reducing lag and ensuring a faster return to boost. The piston design is noted for its durability. Service kits and spring tuning kits are available separately to allow for product servicing and customization. For Porsche 997 Generation 1 vehicles, two FMDVK04S valves are required.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandForge
Part NumberFMDVK04S-C
CategoryAir and Fuel

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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