Stant 27165 Thermostat Gasket (Stat Lok, NOS) – Fitment Guide for Ford, Mercury (1972–1979)
Fitment Guide for Ford, Mercury (1972–1979)
Stant 27165 Stat Lok Engine Coolant Thermostat Gasket – NOS in Original Stant Packaging
Keep your classic on the road with a genuine Stant 27165, the Stant thermostat gasket for Ford's 159 (2.6L) and 171 (2.8L) V6 in the 1972–1974 & 1976–1979 Mercury Capri, 1974–1978 Mustang II, 1975–1979 Pinto and Bobcat, and the 1979 Mustang. Stant's Stat Lok gaskets have an adhesive backing that holds the thermostat centered in its seat while you bolt the housing down — no gasket cement, no thermostat falling out, and less risk of misalignment or cracking the outlet flange.
Key Features
- Part Number: Stant 27165 (single pack); same gasket as Stant 25165 / B65 in the Stant catalog and cross-reference tables
- Type: Engine coolant thermostat (housing/water outlet) gasket, Stat Lok adhesive-backed
- Thermostat opening (mounting hole) diameter: 2.13 in. (per Gates/retailer data for the direct equivalent)
- Condition: New Old Stock (NOS) in original Stant packaging
- Cross-references: Gates 33642; Fel-Pro 8E35093, 35093; Ford OE D2RY 8255 B, D2RY 8255 C, D49Z 8255 L, D4PZ 8255 L, E3TZ 8255 E; Motorcraft RG-39, RG-40, RG-522; Victor Reinz C26675
Stant's own 1928–1994 application catalog lists the 27165 for 2 makes from 1972 to 1979. It is ideal for restoration projects, weekend drivers and mechanics working on obsolete iron.
Compatible Makes & Models (from the Stant catalog)
- Ford (1974–1979): Mustang (1979), Mustang II (1974–1978), Pinto (1975–1979)
- Mercury (1972–1979): Bobcat (1975–1979), Capri (1972–1974, 1976–1979)
Note: Always verify fitment for your specific year, make, model and engine. The full engine-by-engine list is in the fitment appendix below. If you have your old gasket, compare its shape, bolt holes and opening size — or just ask Don and Kathy.
Price is $9.95 plus shipping. Don and Kathy offer a fair deal for this. Buying for a club, a shop, or a whole fleet of project cars? Even better.
Why Buy From Don & Kathy at Don's Obsolete Auto Parts? Don Leask founded one of the earliest online obsolete auto parts businesses (carparts2 on eBay in 1997 — the second auto parts store on eBay) and grew it to 11,000–17,000 unique listings. Today, with help from their digital agent Misty ([email protected]), Don and Kathy connect directly with restorers and collectors while preserving their legacy of quality parts. These gaskets come from Don's own shelves, in original Stant packaging.
To reach them, click the "Don & Kathy Leask" button at the bottom left of any page on donsobsoleteautoparts.com, or email [email protected].
The Stant 27165 Thermostat Gasket: The Right Seal for Ford and Mercury Restorations
Thermostat gaskets are small, but they decide whether a cooling system stays dry. When the thermostat housing comes off a project car or truck, the right gasket is the quiet part that keeps the job from turning into a second trip to the parts counter.
The Stant 27165 is the Stant thermostat gasket for Ford's 159 (2.6L) and 171 (2.8L) V6 in the 1972–1974 & 1976–1979 Mercury Capri, 1974–1978 Mustang II, 1975–1979 Pinto and Bobcat, and the 1979 Mustang. Like the rest of Stant's Stat Lok line, it has an adhesive backing that holds the thermostat in place during installation, so it seats squarely and seals the first time.
Why This Gasket Matters Stant's application catalog covering 1928 through 1994 lists the 27165 across 2 makes (Ford, Mercury). Cross-reference tables tie it to the Stant 25165, Gates 33642 and Fel-Pro 8E35093, which makes it easy to match against an old parts list or a worn-out gasket.
Real-World Fitment Examples
- 1974–1978 Ford Mustang II 2.8L V6
- 1979 Ford Mustang 2.8L V6
- 1975–1979 Ford Pinto and Mercury Bobcat 2.8L V6
- 1972–1973 Mercury Capri 2.6L V6; 1974 and 1976–1979 Capri 2.8L V6
Because these were high-volume service items, NOS stock still turns up in collections like Don Leask's — in original Stant packaging, sorted by number.
Preserving American Automotive History Don and Kathy Leask have been part of the classic car world since the early days of the internet. Starting with carparts2 on eBay in 1997, they became one of the largest online sellers of obsolete parts. Now, with their AI-assisted Don's Obsolete Auto Parts site and digital agent Misty, they're making hard-to-find parts discoverable again — connecting owners of rare inventory with the enthusiasts who need them.
Buying Tips
- Match three things before ordering: year, model and engine. Some engines had more than one thermostat housing design.
- Measure the thermostat opening: the 27165 is listed at about 2.13 in.
- Prefer original packaging for authenticity; keep the Stant label with the part.
- Restoration shops, clubs and collectors can ask about quantity pricing.
Whether you're chasing a concours restoration or simply keeping a classic on the road, the Stant 27165 is a period-correct, ready-to-install solution.
Fitment appendix — every Stant catalog line for
27165
Source: Stant Thermostats, Gaskets, Caps – 1928 through 1994 (application pages). Format: Model — years [engine: years] (notes). Catalog coverage ends with 1994 models.
Ford
- Mustang — 1979 [V-6 171: 1979]
- Mustang II — 1974–1978 [V-6 171: 1974–1978]
- Pinto — 1975–1979 [V-6 171: 1975–1979]
Mercury
- Bobcat — 1975–1979 [V-6 171: 1975–1979]
- Capri — 1972–1974, 1976–1979 [V-6 159: 1972–1973; V-6 171: 1974, 1976–1979]
Cross-references (full)
- Gates: 33642
- Fel-Pro: 8E35093, 35093
- Ford OE: D2RY 8255 B, D2RY 8255 C, D49Z 8255 L, D4PZ 8255 L, E3TZ 8255 E
- Motorcraft: RG-39, RG-40, RG-522
- Victor Reinz: C26675
- Stant equivalents: 25165 (multi/bulk-pack number paired with 27165 in the catalog), B65
Sources
- Stant Thermostats, Gaskets, Caps – 1928 through 1994 catalog (scan on Internet Archive): https://archive.org/details/StantThermostatsGasketsCaps1928Through1994OCR637Pages — Stant part-number index ("Make / Year(s)" table, PDF p. 633–634) and application pages (PDF pages 449–510; 5 pages list 27165). Every catalog line pairs "Thermostat Gasket 25165" with "Thermostat Gasket (1 Pack) 27165".
- PartsHawk – Gates 33642 (interchange lists Stant 27165; mounting hole diameter 2.13"; fitment): https://partshawk.com/gates-33642-engine-coolant-thermostat-housing-gasket.html
- KaKaPart – Stant 27165 (type "Thermostat Gasket", hole diameter 2.13"; application table): http://www.kakapart.com/parts/stant-27165.html
- Parts Universe – Stant 27165 listing (existence): https://mypartsuniverse.com/products/stant-27165-thermostat-gasket