--- id: 20261005_160000_stant-27270-thermostat-seal-fitment-guide title: Stant 27270 Thermostat Seal – Fitment Guide for Saab, Volvo (1973–1994) category: Parts Catalog corpus_topic: PartsCatalog site_category: Parts Catalog summary: Find the exact vehicles that fit the Stant 27270 thermostat seal (also 25270, Gates 33612). From Don's Obsolete Auto Parts (donsobsoleteautoparts.com). Verify year, model and engine before you order. Price is $9.95 plus $3.00 for shipping. description: Find the exact vehicles that fit the Stant 27270 thermostat seal (also 25270, Gates 33612). From Don's Obsolete Auto Parts (donsobsoleteautoparts.com). Verify year, model and engine before you order. Price is $9.95 plus $3.00 for shipping. question: Which vehicles does the Stant 27270 thermostat seal fit, and where can I buy one? keypoints: - 'Part Number: Stant 27270 (single pack); same seal as Stant 25270 in the Stant catalog; Gates equivalent 33612' - 'Size: about 1.79 in. inside diameter × 2.18 in. outside diameter × 0.17 in. thick (Gates 33612 data for the direct equivalent)' - Stant 1928–1994 catalog lists it for 2 make(s), 1973–1994 - Price is $9.95 plus $3.00 for shipping. tags: - stant - stant-27270 - thermostat-seal - water-outlet-seal - restoration-parts - obsolete-auto-parts - fitment-guide - saab - volvo consent: true agent: misty created: '2026-10-05T23:40:24Z' updated: '2026-10-05T23:40:24Z' date: '2026-10-05' vault_stage: 07_CODEX enrich_status: ok enrich_method: bot enrich_blockers: [] pipeline_filename: stant-27270-thermostat-seal-fitment-guide.md source_kind: authored proposed_topic: PartsCatalog lane: PartsCatalog content_status: approved routing_source: carbon prefix: misty headwaters: misty voice: misty active_voice: misty voices: - misty asker_site: donsobsoleteautoparts.com sample: false sentiment: helpful emotions: - reassured - confident sycophancy: 0 truth_score: 9 entropy: 3 predicted_narrative_arc: owner-searching-to-part-found share_url: https://donsobsoleteautoparts.com/kb/PartsCatalog/stant-27270-thermostat-seal-fitment-guide.md source_url: '' part_number: Stant 27270 requested_by: Kathy Leask (email 2026-10-05 3:14 PM PT, msg_0859fa0d63994b9eb5832c2c51135a79) approved_by: Daniel Comp, Grok Bot chat, 2026-10-05 4:40 PM PT --- # Stant 27270 Thermostat Seal – Fitment Guide for Saab, Volvo (1973–1994) **Stant 27270 Engine Coolant Thermostat Seal – from Don's Obsolete Auto Parts** Keep your car or truck on the road with a genuine Stant 27270, the Stant thermostat seal for Saab 99, 900 and 9000 four-cylinder engines (1977–1994), the 1993–1994 Volvo 850 and 960, and the 1973 Volvo 1800. 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 27270 (single pack); same seal as Stant 25270 in the Stant catalog - Type: Engine coolant thermostat / water outlet seal (rubber, grooved, square-cut style per the Gates equivalent) - Size: about 1.79 in. inside diameter × 2.18 in. outside diameter × 0.17 in. thick (Gates 33612 data for the direct equivalent) - Cross-references: Gates 33612; Carquest 30710; Dayco 82503; Edelmann 6038; Fel-Pro 25565, 35425; Ford F32Z8255B; Motorcraft RG-534; NAPA 1070 Stant's own 1928–1994 application catalog lists the 27270 for 2 makes from 1973 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)** - **Saab** (1977–1994): 900 (1979–1994), 9000 (1986–1994), 99 (1977–1980) - **Volvo** (1973–1994): 1800 (1973), 850 (1993–1994), 960 (1993–1994) **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. Current retailer listings (PartsHawk) show 27270 as "replaced by 27285" for new orders. That is a later supersession, not a change to the 1928–1994 applications listed here. **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 (misty@donsobsoleteautoparts.com), 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 misty@donsobsoleteautoparts.com. **The Stant 27270 Thermostat Seal: The Right Seal for Saab and Volvo 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 27270 across 2 makes (Saab, Volvo). Cross-reference tables tie it to the Stant 25270 and Gates 33612, which makes it easy to match against an old parts list or a worn-out seal. **Real-World Fitment Examples** - 1979 Saab 900 4-Cyl. 121 cu in - 1973 Volvo 1800 4-Cyl. 121 cu in **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 27270 is about 1.79 in. inside diameter × 2.18 in. outside diameter × 0.17 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 27270 Source: Stant *Thermostats, Gaskets, Caps – 1928 through 1994* (application pages). Format: Model — years [engine: years (catalog notes)]. Catalog coverage ends with 1994 models. **Saab** - 900 — 1979–1994 [4-Cyl. 121 cu in: 1979 | 4-Cyl. 2.0L: 1980–1994 | 4-Cyl. 2.1L: 1991–1994 | 4-Cyl. 2.3L: 1994] - 9000 — 1986–1994 [4-Cyl. 2.0L: 1986–1990 | 4-Cyl. 2.3L: 1990–1994] - 99 — 1977–1980 [4-Cyl. 121 cu in: 1977–1979 | 4-Cyl. 2.0L: 1980] **Volvo** - 1800 — 1973 [4-Cyl. 121 cu in: 1973] - 850 — 1993–1994 [5-Cyl. 2.3L: 1994 | 5-Cyl. 2.4L: 1993–1994] - 960 — 1993–1994 [6-Cyl. 2.9L: 1993–1994] ## Cross-references (full) - **Gates:** 33612 - **Carquest:** 30710 - **Dayco:** 82503 - **Edelmann:** 6038 - **Fel-Pro:** 25565, 35425 - **Ford:** F32Z8255B - **Motorcraft:** RG-534 - **NAPA:** 1070 - **Pep Boys:** 25565 - **Robertshaw:** R92 - **Saab:** 8310740, 9176165 - **Standard Thomson:** 1070 - **Victor Reinz:** C20283, C30680 - **Volvo Cars:** 418361, 68422146 - **Stant equivalents:** 25270, 30990, C70 ## 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 605, 624). Every catalog line pairs "Thermostat Seal 25270" with "Thermostat Seal (1 Pack) 27270". 2. PartsHawk – Gates 33612 (interchange lists Stant 27270; style and dimensions): https://partshawk.com/gates-33612-engine-coolant-thermostat-seal.html 3. PartsHawk – Stant 27270 (fitment list): https://partshawk.com/stant-27270-engine-coolant-thermostat-seal.html 4. RockAuto – 1993 Saab 900 2.1L thermostat seal listing (Stant 27270, "Replaces 25270"): https://www.rockauto.com/en/catalog/saab,1993,900,2.1l+l4,1265723,cooling+system,thermostat+/+thermostat+housing+/+water+outlet+seal,2136 5. Amazon – Stant 27270 Engine Coolant Thermostat Seal ("Rubber seals are custom-fit for applications"): https://www.amazon.com/Stant-27270-Engine-Coolant-Thermostat/dp/B00J67E0GS