Air and Fuel› Superchargers, Turbochargers and Components

SPA Turbo

07K Cast Iron Top-Mount Turbo Manifold

$499.90

SKU: TMW23B

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The SPA Turbo TMW23B is a top-mount turbo manifold designed for the VW Jetta/Golf MK4 with the 2.5L 5-cylinder 20V 07K engine. It features a standard T3 turbine housing flange and a 44mm V-Band wastegate flange. The manifold is constructed from cast iron and has a runner internal diameter of 41.5mm. SPA Performance states this manifold offers improved flow compared to their TMW17 model and can accommodate larger turbines.
Show original supplier description
The SPA Turbo TMW23B is a cast iron top-mount turbo manifold engineered specifically for the VW Jetta and Golf MK4 equipped with the 2.5L 5-cylinder 20V 07K engine. This manifold is designed to optimize exhaust flow for turbocharging applications, featuring a standard T3 turbine housing flange and a 44mm V-Band wastegate flange. SPA Performance indicates that this TMW23B offers enhanced flow characteristics over previous models like the TMW17, making it suitable for larger turbochargers such as .70, HX40, and GT35 variants. The runner internal diameter is specified at 41.5mm, and the material is durable cast iron. While primarily designed for the MK4 Jetta and Golf, this manifold may be adaptable to other projects, though users are advised to consult dimensions and verify compatibility. The product listing also notes that the hot housing for the turbine side is on the right (passenger) side. For those looking to adapt this manifold for a Jetta or Golf MK5, SPA Turbo offers specific models, and the TMW23B is referenced for MK4 'swap' applications. Users should note that the related intake manifold is not compatible with the original plastic engine cover.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSPA Turbo
Part NumberTMW23B
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy