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Cobalt

Coolant Reroute Kit

$271.00 $255.99 Save $15.01

SKU: 910-850-CP

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 Cobalt Coolant Reroute Kit is designed to optimize coolant flow in your Mazda MX-5 Miata. The factory design, originating from a front-wheel-drive chassis, reroutes coolant exit to the front of the engine, which is not ideal for coolant circulation. This kit moves the exit back to its original position to restore proper coolant flow.
Show original supplier description
The Cobalt Coolant Reroute Kit addresses a factory design limitation in the Mazda MX-5 Miata engine, which was originally developed for a front-wheel-drive chassis. This adaptation led to the coolant exit being relocated to the front of the engine, compromising optimal coolant flow. By repositioning the exit to its correct location at the rear of the engine, this kit restores the intended coolant circulation pattern. Proper coolant flow is essential for maintaining consistent engine temperatures and preventing hot spots. The reroute kit aims to improve the overall thermal management of the engine, contributing to longevity and optimal performance, especially during demanding conditions. It is important to note that this kit does not include a thermostat. It is recommended to replace the thermostat concurrently with the installation of this reroute kit. The stock thermostat (part number 999-027) is compatible with this kit.
Vehicle Symptoms
  • Engine temperature gauge climbs above normal quickly
  • Steam or coolant smell from engine bay under hard driving
  • Uneven cylinder temperatures or hot spots on engine block
  • Coolant loss or frequent need to top off reservoir
  • Performance degradation or misfire after sustained high RPM
Diagnostic Codes
  • P0217 – Engine Coolant Overtemperature Condition
Relevant Conversations
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  • P0217 Miata solution coolant reroute
  • Mazda Miata cooling system upgrade recommendations
  • How to install coolant reroute on NA Miata
  • Miata overheating at idle but fine driving
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  • Miata coolant reroute vs stock comparison
  • Miata steam from hood after hard driving fix

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.

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Specifications

BrandCobalt
Part Number910-850-CP
CategoryHeating and Cooling
5,000+ Trusted brands
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(760) 282-4645 hello@motormia.co

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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.

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