Mishimoto MMTS-350Z-07 Racing Thermostat for 07-09 Nissan 350Z VQ35HR

Vehicle Fitment

• 2007-2009 Nissan 350Z (VQ35HR, RWD)
• Also fits 2008 Infiniti G35 & 2008-10 Infiniti EX35/FX35/M35
• Fitment confirmed through 2025. Later coverage may vary by model.

Features

• Performance racing thermostat that opens at ~154 °F for improved cooling flow
• Direct-fit replacement for OE thermostat in specified models
• Promotes greater coolant circulation earlier than factory unit
• Helps maintain cooler engine operating temperatures under load
• Beneficial for street, track, or forced-induction applications
• Constructed to Mishimoto quality standards with lifetime warranty
• Maintains proper engine warm-up while optimizing coolant flow
• O-ring gasket included for secure seal at thermostat housing

Specifications

• Part type: Low-temperature racing thermostat
• Activation temperature: ~154.4 °F (68 °C)
• OEM activation temperature: ~172-170 °F (76-77 °C)
• Material: High-quality metal housing with engineered valve
• Compatible engines: VQ35HR V6 and similar Nissan/Infiniti VQ engines
• Construction: Direct-fit OEM replacement

Included Components

• 1x Mishimoto racing thermostat (MMTS-350Z-07)
• 1x Rubber O-ring gasket
• Installation instructions

Product Description

The Mishimoto MMTS-350Z-07 Racing Thermostat is a direct-fit, performance-oriented replacement for the stock thermostat in Nissan 350Z models from 2007-2009 (and several Infiniti applications). Compared to the OEM unit, this thermostat opens at a lower temperature (~154 °F vs ~172 °F), allowing coolant to circulate through the engine and radiator earlier in the warm-up cycle. This results in improved engine temperature management under spirited driving, performance upgrades, or track conditions.

Designed for both street and track enthusiasts, the MMTS-350Z-07 helps reduce excessive engine heat that can occur during heavy load or high-output situations. The direct-fit design simplifies installation, and the included O-ring gasket ensures a secure seal at the housing. Backed by Mishimoto's Lifetime Warranty, this thermostat is a reliable upgrade for drivers seeking better thermal control without sacrificing proper warm-up performance.