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Heating and Cooling› Thermostats, Housings and Fillers

Mazda (OEM)

Engine Coolant Thermostat

Name: Engine Coolant Thermostat
Brand: Mazda (OEM)
SKU: N3H1-15-171

$59.69 $42.84 Save $16.85

SKU: N3H1-15-171

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Overview

The Mazda N3H1-15-171 is a genuine OEM engine coolant thermostat. It is a direct replacement part for select Mazda RX-8 models.

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The Mazda N3H1-15-171 is a genuine OEM engine coolant thermostat specifically designed for the Mazda RX-8. This thermostat plays a crucial role in maintaining optimal engine operating temperature by controlling the flow of coolant. This component is a direct fit replacement, ensuring compatibility and ease of installation for owners of the specified Mazda RX-8 model years. It is manufactured to Mazda's exacting standards to guarantee performance and durability.

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

Brand	Mazda (OEM)
Part Number	N3H1-15-171
Category	Heating and Cooling

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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.

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