Thermostat Assembly Replace 21200-31U1B Compatible with Nissan 4.0L Infiniti 3.5L - 2003-2006 350Z G35, 2005-2019 Frontier, 2005-2012 Pathfinder, 2005-2015 Xterra, 2012-2021 NV1500 NV2500 NV3500, More
Description
🔥 Stay cool, drive smarter — the thermostat your Nissan deserves!
- SEAMLESS OE FIT - Crafted with stainless steel flange and spring frame for flawless installation and lasting strength.
- HASSLE FREE SUPPORT - Easy replacement guarantee and responsive customer service to keep you moving without downtime.
- ENGINE TEMPERATURE MASTERY - Keeps your V6 running perfectly cool or warm—no more overheating or underheating drama.
- PREMIUM AFTERMARKET QUALITY - Meets or exceeds original equipment standards without the OEM price tag—performance you can trust.
- BROAD NISSAN INFINITI COVERAGE - Compatible with 2003-2021 Nissan 3.5L & 4.0L V6 models including 350Z, Frontier, Pathfinder, Xterra, NV series, and Infiniti G35, FX35, M35.
This Allmotorparts thermostat assembly (Part #21200-31U1B) is a high-quality aftermarket replacement designed for Nissan and Infiniti V6 engines (3.5L & 4.0L) from 2003 to 2021. Engineered with stainless steel components for durability and precision temperature regulation, it ensures optimal engine performance by preventing overheating and underheating. Compatible with multiple popular models including 350Z, Frontier, Pathfinder, Xterra, NV series, and Infiniti G35/FX35/M35, it offers an OE fit and reliable function backed by customer support.
Specifications
| Manufacturer | Allmotorparts |
| Brand | Allmotorparts |
| Item Weight | 10.2 ounces |
| Package Dimensions | 4.96 x 4.21 x 3.7 inches |
| Country of Origin | China |
| Manufacturer Part Number | AMP349 |
Reviews
E**N
Product looks good material
Works good no leaks
I**A
Works!
Great quality for the price. it worked as it should ! No more overheating
J**E
Perfectamente en que nesesitaba
Ala perfección
J**N
👍
Working well.
D**2
Made all the differnce
I needed this right away and they were spot on. Excellent quality.
Common Questions
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