Ask Don · 20261005_160000_stant-27272-thermostat-seal-fitment-guide

Stant 27272 Thermostat Seal – Fitment Guide for Asuna, Buick, Cadillac, Chevrolet, GMC, Geo and more (1985–1994)

Asuna, Buick, Cadillac, Chevrolet, GMC, Geo and more (1985–1994)

Stant 27272 Engine Coolant Thermostat Seal – from Don's Obsolete Auto Parts

Keep your car or truck on the road with a genuine Stant 27272, the Stant thermostat seal for GM 2.2L and 2.3L fours (1992–1994 Cavalier, Beretta, Corsica, S-10, Century, Cutlass Ciera and more), GM 2.8L/3.1L/3.4L V6 (Camaro and Firebird 1989–1994, 1985–1986 Citation, Celebrity, Cavalier and Cimarron), Chevrolet/GMC 7.4L V8 trucks and vans 1991–1994, Isuzu V6 trucks, Suzuki Swift and its GM cousins. A thermostat seal is a molded rubber ring that seals the thermostat or the water outlet instead of a flat paper gasket. Stant's description of these seals: no sealer or RTV is needed, and each one is shaped for its application.

Key Features

• Part Number: Stant 27272 (single pack); same seal as Stant 25272 in the Stant catalog
• Type: Engine coolant thermostat / water outlet seal (rubber, grooved style per the Gates equivalent)
• Size: about 1.72 in. inside diameter × 1.915 in. outside diameter × 0.13 in. thick (Gates 33611 data for the direct equivalent)
• Cross-references: Gates 33611; Carquest 30989; Dayco 82515; Edelmann 6042; Fel-Pro 35393; General Motors 10089626, 10103562, 10141925, 10168677, 10209046, 10226107, 24572882, 24576352, 24576633, 24577118, 90096383; Ideal Tridon 30989; Isuzu 8101158000, 8245771180

Stant's own 1928–1994 application catalog lists the 27272 for 11 makes from 1985 to 1994. It's a good fit for restoration projects, weekend drivers and mechanics keeping older vehicles running.

Compatible Makes & Models (from the Stant catalog)

• Asuna (1993–1993): GT (1993)
• Buick (1993–1994): Century (1993–1994), Skylark (1994)
• Cadillac (1985–1986): Cimarron (1985–1986)
• Chevrolet (1985–1994): Beretta (1992–1994), C & K Series Pickup (C/K pickups) (1991–1994), Camaro (1989–1991, 1993–1994), Cavalier (1985–1986, 1992–1994), Celebrity (1985–1986), Citation (1985), Corsica (1992–1994), G Series Van (Chevy Van / G-van) (1991–1994), LLV (Postal Vehicle) (1994), Lumina (1993), P Series Van (P-series chassis) (1991–1994), R & V Series Pickup (R/V pickups) (1991), S Series Pickup (S-10) (1990, 1993–1994), Suburban (1991–1994)
• GMC (1990–1994): C & K Series Pickup (C/K pickups) (1991–1994), G Series Van (Vandura / Rally) (1991–1994), P Series Van (P-series chassis) (1991–1994), R & V Series Pickup (R/V pickups) (1991), S Series Pickup (S-15) (1990), Sonoma (1993–1994), Suburban (1991–1994)
• Geo (1992–1992): Metro (1992)
• Isuzu (1990–1994): Pickup (1991–1994), Rodeo (1991–1992), Trooper (1990–1991)
• Oldsmobile (1993–1994): Achieva (1994), Cutlass Ciera (1993–1994)
• Passport (1988–1992): Optima (1988–1992)
• Pontiac (1988–1994): Firebird (1989–1991, 1993–1994), Grand Am (1994), LeMans (1988–1993)
• Suzuki (1989–1994): Swift (1989–1994)

Note: Always verify fitment for your specific year, make, model and engine. Some catalog lines are limited to one engine code or housing type; the full engine-by-engine list is in the fitment appendix below. If you have your old seal, compare its size and shape, or just ask Don and Kathy.

Price is $9.95 plus $3.00 for 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 seals come from Don's own shelves.

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 27272 Thermostat Seal: The Right Seal for Asuna and Buick Owners

Thermostat seals are small, but they decide whether a cooling system stays dry. When the thermostat housing comes off, the right seal is the quiet part that keeps the job from turning into a second trip to the parts counter.

Why This Seal Matters Stant's application catalog covering 1928 through 1994 lists the 27272 across 11 makes (Asuna, Buick, Cadillac, Chevrolet, GMC, Geo, Isuzu, Oldsmobile, Passport, Pontiac, Suzuki). Cross-reference tables tie it to the Stant 25272 and Gates 33611, which makes it easy to match against an old parts list or a worn-out seal.

Real-World Fitment Examples

• 1993 Asuna GT 4-Cyl. 1.6L (Canada)
• 1993–1994 Buick Century 4-Cyl. 2.2L
• 1985–1986 Cadillac Cimarron V-6 2.8L
• 1992–1994 Chevrolet Beretta 4-Cyl. 2.2L
• 1991–1994 GMC C & K Series Pickup (C/K pickups) V-8 7.4L
• 1992 Geo Metro 4-Cyl. 1.3L (Canada)
• 1991–1994 Isuzu Pickup V-6 3.1L
• 1994 Oldsmobile Achieva 4-Cyl. 2.3L

Keeping Older Cars on the Road 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 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. Watch for catalog notes such as engine VIN codes or housing type.
• Compare sizes: the 27272 is about 1.72 in. inside diameter × 1.915 in. outside diameter × 0.13 in. thick.
• Some engines use a gasket and a seal at the thermostat; check what came off yours.
• Restoration shops, clubs and collectors can ask about quantity pricing.

Fitment appendix — every Stant catalog line for

27272

Source: Stant Thermostats, Gaskets, Caps – 1928 through 1994 (application pages). Format: Model — years [engine: years (catalog notes)]. Catalog coverage ends with 1994 models.

Asuna

• GT — 1993 [4-Cyl. 1.6L (Canada): 1993]

Buick

• Century — 1993–1994 [4-Cyl. 2.2L: 1993–1994]
• Skylark — 1994 [4-Cyl. 2.3L: 1994]

Cadillac

• Cimarron — 1985–1986 [V-6 2.8L: 1985–1986]

Chevrolet

• Beretta — 1992–1994 [4-Cyl. 2.2L: 1992–1994 | 4-Cyl. 2.3L: 1994]
• C & K Series Pickup (C/K pickups) — 1991–1994 [V-8 7.4L: 1991–1994]
• Camaro — 1989–1991, 1993–1994 [V-6 2.8L: 1989 | V-6 3.1L: 1990–1991 | V-6 3.4L: 1993–1994]
• Cavalier — 1985–1986, 1992–1994 [4-Cyl. 2.2L: 1992–1994 | V-6 2.8L: 1985–1986]
• Celebrity — 1985–1986 [V-6 2.8L: 1985–1986]
• Citation — 1985 [V-6 2.8L: 1985]
• Corsica — 1992–1994 [4-Cyl. 2.2L: 1992–1994]
• G Series Van (Chevy Van / G-van) — 1991–1994 [V-8 7.4L: 1991–1994]
• LLV (Postal Vehicle) — 1994 [4-Cyl. 2.2L: 1994]
• Lumina — 1993 [4-Cyl. 2.2L: 1993]
• P Series Van (P-series chassis) — 1991–1994 [V-8 7.4L: 1991–1994]
• R & V Series Pickup (R/V pickups) — 1991 [V-8 7.4L: 1991]
• S Series Pickup (S-10) — 1990, 1993–1994 [4-Cyl. 2.2L: 1994 | V-6 2.8L: 1990, 1993]
• Suburban — 1991–1994 [V-8 7.4L: 1991–1994]

GMC

• C & K Series Pickup (C/K pickups) — 1991–1994 [V-8 7.4L: 1991–1994]
• G Series Van (Vandura / Rally) — 1991–1994 [V-8 7.4L: 1991–1994]
• P Series Van (P-series chassis) — 1991–1994 [V-8 7.4L: 1991–1994]
• R & V Series Pickup (R/V pickups) — 1991 [V-8 7.4L: 1991]
• S Series Pickup (S-15) — 1990 [V-6 2.8L: 1990]
• Sonoma — 1993–1994 [4-Cyl. 2.2L: 1994 | V-6 2.8L: 1993]
• Suburban — 1991–1994 [V-8 7.4L: 1991–1994]

Geo

• Metro — 1992 [4-Cyl. 1.3L (Canada): 1992]

Isuzu

• Pickup — 1991–1994 [V-6 3.1L: 1991–1994]
• Rodeo — 1991–1992 [V-6 3.1L: 1991–1992]
• Trooper — 1990–1991 [V-6 2.8L: 1990–1991]

Oldsmobile

• Achieva — 1994 [4-Cyl. 2.3L: 1994]
• Cutlass Ciera — 1993–1994 [4-Cyl. 2.2L: 1993–1994]

Passport

• Optima — 1988–1992 [4-Cyl. 1.6L (Canada): 1988–1992]

Pontiac

• Firebird — 1989–1991, 1993–1994 [V-6 2.8L: 1989 | V-6 3.1L: 1990–1991 | V-6 3.4L: 1993–1994]
• Grand Am — 1994 [4-Cyl. 2.3L: 1994]
• LeMans — 1988–1993 [4-Cyl. 1.6L: 1988–1993]

Suzuki

• Swift — 1989–1994 [3-Cyl. 1.0L (Canada): 1993–1994 | 4-Cyl. 1.3L: 1989–1994]

Cross-references (full)

• Gates: 33611
• Carquest: 30989
• Dayco: 82515
• Edelmann: 6042
• Fel-Pro: 35393
• General Motors: 10089626, 10103562, 10141925, 10168677, 10209046, 10226107, 24572882, 24576352, 24576633, 24577118, 90096383
• Ideal Tridon: 30989
• Isuzu: 8101158000, 8245771180
• McCord: 74-0140
• Motorad: MG92
• NAPA: 1076
• Pep Boys: 35614
• Standard Thomson: 1076
• Suzuki: 1756982001H17
• Stant equivalents: 25272, 30989, C72

Sources

1. Stant Thermostats, Gaskets, Caps – 1928 through 1994 catalog (scan on Internet Archive): https://archive.org/details/StantThermostatsGasketsCaps1928Through1994OCR637Pages — part-number index ("Make / Year(s)" table at the back of the catalog) and application pages (PDF pages 312, 319, 332, 338, 349, 356, 357, 362, 365, 373, 376, 384, 385, 386, 392, 459, 464, 467, 472, 473, 474, 478, 485, 486, 536, 540, 556, 578, 579, 581, 589, 613). Every catalog line pairs "Thermostat Seal 25272" with "Thermostat Seal (1 Pack) 27272".
2. PartsHawk – Gates 33611 (interchange lists Stant 27272; style and dimensions): https://partshawk.com/gates-33611-engine-coolant-thermostat-seal.html
3. AutoPartsPrime – Stant 27272 ("Engine Coolant Thermostat Seal"; UPC 033342072725; vehicle list): https://www.autopartsprime.com/stant/engine-coolant-thermostat-seal/mp-27272
4. PartsHawk – Stant 27272 (fitment list): https://partshawk.com/stant-27272-engine-coolant-thermostat-seal.html

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