Product Description
Seal the 6.0L thermostat outlet the right way with the MAHLE C31801 Thermostat Housing Seal for 2003–2007 Ford Super Duty. OE-quality materials deliver reliable coolant containment and long service life on work, tow, and daily-driver builds. Designed as a direct-fit replacement for the factory housing O-ring on 6.0L Power Stroke platforms.
Fitment
- 2003–2007 Ford F-250 / F-350 / F-450 / F-550 Super Duty — 6.0L Power Stroke
- 2003–2005 Ford Excursion — 6.0L Power Stroke
- Also used on select 2004–2010 E-Series vans with 6.0L (where equipped)
Cross-Reference / Alternatives (Mahle only)
- Mahle HS54450 Cylinder Head Gasket Set (18mm dowels) — 2003–2006 6.0L: HS54450
- Mahle HS54579 Cylinder Head Gasket Set (20mm dowels) — 2006.5–2007 6.0L: HS54579
- Mahle 95-3747VR Complete Engine Gasket Set (no head gaskets) — 2003–2007 6.0L: 95-3747VR
What’s Included
- Thermostat housing seal (O-ring), quantity: 1
Why Buy From CPP Diesel
- Fast shipping and diesel-focused product support
- Curated Mahle coverage for Ford 6.0L Power Stroke
FAQ
Will this fit my 2003–2007 6.0L?
Yes—this seal fits the thermostat housing on 2003–2007 Super Duty 6.0L Power Stroke applications (plus 2003–2005 Excursion and certain 2004–2010 E-Series). Verify by matching your housing style.
Is this an OEM-quality part?
Yes—Mahle supplies OE-level sealing components engineered for proper compression set and durability.
Do I need sealant?
No—install the O-ring clean and lightly lubricated; do not use RTV on the O-ring groove.
Specifications for Mahle C31801
| Attribute | Value |
|---|---|
| Brand | Mahle |
| Part Number | C31801 |
| UPC | 027067652768 |
| GTIN | 027067652768 |
| Engine Compatibility | 2003–2007 Ford 6.0L Power Stroke (select E-Series 2004–2010) |
| Shipping | Ships via standard ground parcel from our U.S. warehouse |
| Prop 65 | Not specified by manufacturer. See www.P65Warnings.ca.gov. |
