Engines and Components› Camshafts and Valvetrain

Tomei

Racing Valve Set

$747.00

SKU: TA303A-NS04A

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Tomei Racing Valve Set is a performance upgrade designed for the 2002-2009 Nissan 350Z. It features an oversized head diameter for improved flow rate and a waisted stem to enhance air/gas volume in the combustion chamber. The head, face, stem, and lock groove designs are optimized for superior sealing performance, efficiency, and durability.
Show original supplier description
The Tomei Racing Valve Set is engineered to significantly enhance the performance of the 2002-2009 Nissan 350Z's engine. This set features intake valves constructed from SUH35 Heat Resistant Steel with a 38.15mm head diameter and exhaust valves made from Inconel 751 Alloy with a 32.35mm head diameter. The oversized head diameters are specifically tailored for the application, leading to a substantial improvement in flow rate. Additionally, the waisted stem design allows for a greater volume of air and gases to efficiently enter and exit the combustion chamber as the valve moves.

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

BrandTomei
Part NumberTA303A-NS04A
CategoryEngines and Components

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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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