📱 Call Us

THANK YOU FOR ENTERING FSD26. Winner announced on or before October 29.
Fleece Performance

Fleece Performance 11-25 Ford F-250/F-350/F-450 6.7L Power Stroke Thermostat Housing Upgrade

4.7 store rating · 586 reviews
SKU: FPEFPE-FMC-TH-1125

Fits 2011–2025 Ford F-250 Super Duty / F-350 Super Duty · 6.7L Power Stroke

All 12 applications
$100.99
Only 6 left. Ships in 1–2 business days.
  • Authorized dealerGenuine Fleece Performance parts, sourced direct
  • 30-day returnsSee the return policy
  • Diesel techs on the line908-223-9744, call or text
  • Secure checkoutAmerican Express Apple Pay Diners ClubDiscoverGoogle Pay Mastercard PayPal

Upgrade your plastic OEM or aftermarket engine coolant thermostat housing on your 6.7L Power Stroke with our more durable cast aluminum model! Our direct replacement thermostat housing works with all factory and replacement thermostats. New O-rings included with the kit. PROBLEM OVERVIEW COMPLAINT: Coolant leaks around the thermostat housing area, a low coolant level, or the smell of coolant during engine operation or after operation. CAUSE:A cracked thermostat housing will result in a coolant leak, potentially leading to engine overheating and damage. Visual Inspection: Carefully inspect the thermostat housing for cracks or damage. Pressure Test: Perform a coolant system pressure test to ensure the system maintains pressure and observe for leaks at all split lines, including the thermostat housing and coolant crossover manifold. SOLUTION: The Fleece Performance thermostat housing upgrade is a drop-in, direct factory replacement for the weak plastic housing that can become brittle overtime! Application Notes Replaces Ford Part Number: RH315 (LC3Z8592B) and Dorman Part Number 902-1074 Fits the following vehicles: 2011-2025 F250 Super Duty 2011-2025 F350 Super Duty 2011-2025 F450 Super Duty 2011-2025 F550 Super Duty 2016-2019 F650 Super Duty 2016-2019 F750 Super Duty 2021-2026 F650 Super Duty 2021-2026 F750 Super Duty 2020-2025 F600 Super Duty

Installation Instructions
Warranty

Reviews

What customers say

Verified reviews collected by Loox from real orders.

Good to know

Questions, answered straight.

If it is not here, call or text the counter. Real people, real answers.

Fitment

  • Will this fit my truck?

    The Fits section at the top of the page lists the manufacturer's applications for this exact part. If your year, make and model is not there, or you are not sure, text us a photo of what you are replacing with your year and engine and we will confirm it before you order.

  • What if I order the wrong part?

    Call or text us before it ships and we will swap it. After delivery you have 30 days to return it in new, uninstalled condition. The return policy has the restocking details.

Shipping

  • When will it ship?

    In-stock parts usually ship within 1 to 2 business days from warehouses across the USA. The stock line under the options tells you the status of the part you are looking at. Large items ship LTL freight and we call to schedule delivery.

  • Why did I only get part of my order?

    We ship from multiple warehouses, so an order with several items can arrive in more than one box. Tracking for each shipment is emailed as it goes out. Full details in the shipping policy.

Returns and warranty

  • What is the return policy?

    30 days from delivery, in new and uninstalled condition, with a restocking fee. Everything is spelled out in the Returns & Refund Policy.

  • How do warranty claims work?

    We are an authorized dealer, so the manufacturer's warranty applies to every part we sell. Call or text us with your order number and we handle the claim with the brand for you.

Paying

  • Can I pay over time?

    Yes. Shop Pay installments are offered at checkout on qualifying orders, and the monthly estimate shows right under the price.

  • What is a core deposit?

    Some remanufactured parts, like injectors and turbos, carry a refundable core deposit. It is shown on the product page when it applies and refunded when your old part comes back to us.

Same brand

More from Fleece Performance

Shop all 269 Fleece Performance parts

From the FSD shop

More for Ford trucks

Everything for Ford

Why buy here

A diesel shop that sells parts, not a website that sells boxes.

Every part on this site is one our own techs can stand behind.

  • We run what we sell

    A working diesel repair and fabrication shop in Nazareth, PA. These are the parts our techs install every week.

  • Real techs on the phone

    Call or text 908-223-9744 and you get a diesel tech, not a script.

  • Authorized dealer

    Genuine parts straight from the manufacturer, with the factory warranty behind them.

  • Fast from stock

    Most in-stock parts ship in 1 to 2 business days from warehouses across the USA.

The shop floor
The shop floor
In-house fabrication
In-house fabrication
Engine work
Engine work

Authorized dealer for 140+ brands

All brands
  • 7+ Years in business
  • 6+ Shop technicians
  • 30,000+ In-stock SKUs
  • 25+ Trucks given away
FSD shop interior - trucks on lifts The shop floor, Nazareth, PA

Full Send Diesel, Nazareth, PA

A team of diesel people, not a call center.

Full Send Diesel is a shop full of techs, builders and parts people in Nazareth, Pennsylvania. When you call or text, you reach someone who works on these trucks and knows the parts.

Not sure what you need? Send a photo of what you are replacing with your year and engine. We will point you to the right part, confirm it is in stock, and get it moving.

Call 908-223-9744 Text us Email

Mon–Fri, 8am–4pm ET. After hours, text or email and we answer first thing in the morning.

⌕