---
id: 20261005_160000_stant-27282-thermostat-seal-fitment-guide
title: Stant 27282 Thermostat Seal – Fitment Guide for Buick, Chevrolet, GMC, Oldsmobile, Pontiac (1974–1994)
category: Parts Catalog
corpus_topic: PartsCatalog
site_category: Parts Catalog
summary: Find the exact vehicles that fit the Stant 27282 thermostat seal (also 25282, Gates 33619). 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 27282 thermostat seal (also 25282, Gates 33619). 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 27282 thermostat seal fit, and where can I buy one?
keypoints:
- 'Part Number: Stant 27282 (single pack); same seal as Stant 25282 in the Stant catalog; Gates equivalent 33619'
- 'Size: about 1.95 in. inside diameter × 2.31 in. outside diameter × 0.15 in. thick (Gates 33619 data for the direct equivalent)'
- Stant 1928–1994 catalog lists it for 5 make(s), 1974–1994
- Price is $9.95 plus $3.00 for shipping.
tags:
- stant
- stant-27282
- thermostat-seal
- water-outlet-seal
- restoration-parts
- obsolete-auto-parts
- fitment-guide
- buick
- chevrolet
- gmc
- oldsmobile
- pontiac
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-27282-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-27282-thermostat-seal-fitment-guide.md
source_url: ''
part_number: Stant 27282
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 27282 Thermostat Seal – Fitment Guide for Buick, Chevrolet, GMC, Oldsmobile, Pontiac (1974–1994)

**Stant 27282 Engine Coolant Thermostat Seal – from Don's Obsolete Auto Parts**

Keep your car or truck on the road with a genuine Stant 27282, the Stant thermostat seal for the GM 2.5L four (1982–1992 Century, Celebrity, Cutlass Ciera, 6000, Grand Am, Skylark and more), 1992–1994 GM 4.3L V6 (Eng. VIN Z) and 5.0L/5.7L V8 trucks, vans and SUVs, the 1994 6.5L diesel (Eng. VIN Y), 1974 Chevrolet/GMC truck engines and the 1975–1976 Oldsmobile Cutlass 250 six. 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 27282 (single pack); same seal as Stant 25282 in the Stant catalog  
- Type: Engine coolant thermostat / water outlet seal (rubber, grooved style per the Gates equivalent)  
- Size: about 1.95 in. inside diameter × 2.31 in. outside diameter × 0.15 in. thick (Gates 33619 data for the direct equivalent)  
- Cross-references: Gates 33619; Carquest 30882; General Motors 10137488, 10209045, 12553106, 14137488, 1626109; NAPA 1093; Pep Boys 35001; Standard Thomson 1093; Toyota 163250T030, 1632528010; Stant equivalents 25282, 30882  

Stant's own 1928–1994 application catalog lists the 27282 for 5 makes from 1974 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)**  
- **Buick** (1982–1992): Century (1982–1992), Skylark (1989–1991), Somerset Regal (1985)  
- **Chevrolet** (1974–1994): Astro (1993–1994), Blazer Compact (S-10 Blazer) (1993–1994), Blazer Full Size (1992–1994), C & K Series Pickup (C/K pickups) (1992–1994), Celebrity (1982–1990), G Series Van (Chevy Van / G-van) (1988, 1992–1994), P Series Van (P-series chassis) (1974, 1992–1994), S Series Pickup (S-10) (1993–1994), Suburban (1992–1994)  
- **GMC** (1974–1994): C & K Series Pickup (C/K pickups) (1974, 1992–1994), G Series Van (Vandura / Rally) (1988, 1992–1994), Jimmy (1993–1994), P Series Van (P-series chassis) (1992–1994), Safari (1993–1994), Sonoma (1993–1994), Suburban (1992–1994), Typhoon (1993), Yukon (1992–1994)  
- **Oldsmobile** (1975–1992): Calais (1987), Cutlass (1975–1976), Cutlass Calais (1989–1991), Cutlass Ciera (1982–1992), Cutlass Cruiser (1990)  
- **Pontiac** (1982–1991): 6000 (1982–1991), Grand Am (1989–1991)  

**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 (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 27282 Thermostat Seal: The Right Seal for Buick and Chevrolet 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 27282 across 5 makes (Buick, Chevrolet, GMC, Oldsmobile, Pontiac). Cross-reference tables tie it to the Stant 25282 and Gates 33619, which makes it easy to match against an old parts list or a worn-out seal.

**Real-World Fitment Examples**  
- 1991–1992 Buick Century 4-Cyl. 2.5L  
- 1993–1994 Chevrolet Astro V-6 4.3L  
- 1974 GMC C & K Series Pickup (C/K pickups) 6-Cyl. 250 cu in  
- 1987 Oldsmobile Calais V-6 3.0L  
- 1991 Pontiac 6000 4-Cyl. 2.5L  

**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 27282 is about 1.95 in. inside diameter × 2.31 in. outside diameter × 0.15 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 27282

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

**Buick**  
- Century — 1982–1992 [4-Cyl. 2.5L: 1982–1992]  
- Skylark — 1989–1991 [4-Cyl. 2.5L: 1989–1991]  
- Somerset Regal — 1985 [V-6 3.0L: 1985]  

**Chevrolet**  
- Astro — 1993–1994 [V-6 4.3L: 1993–1994 (1993–1994: engine VIN code Z)]  
- Blazer Compact (S-10 Blazer) — 1993–1994 [V-6 4.3L: 1993–1994 (1993–1994: engine VIN code Z)]  
- Blazer Full Size — 1992–1994 [V-8 5.7L: 1992–1994]  
- C & K Series Pickup (C/K pickups) — 1992–1994 [V-6 4.3L: 1993–1994 | V-8 5.0L: 1992–1994 | V-8 5.7L: 1992–1994]  
- Celebrity — 1982–1990 [4-Cyl. 2.5L: 1982–1990 | V-6 2.8L: 1982]  
- G Series Van (Chevy Van / G-van) — 1988, 1992–1994 [V-6 4.3L: 1993–1994 | V-8 5.0L: 1992–1994 | V-8 5.7L: 1988, 1992–1994 (1988: engine VIN code M)]  
- P Series Van (P-series chassis) — 1974, 1992–1994 [6-Cyl. 292 cu in: 1974 | V-6 4.3L: 1993–1994 | V-8 5.7L: 1992–1994 | V-8 6.5L Diesel: 1994 (1994: engine VIN code Y)]  
- S Series Pickup (S-10) — 1993–1994 [V-6 4.3L: 1993–1994 (1993–1994: engine VIN code Z)]  
- Suburban — 1992–1994 [V-8 5.7L: 1992–1994]  

**GMC**  
- C & K Series Pickup (C/K pickups) — 1974, 1992–1994 [6-Cyl. 250 cu in: 1974 | 6-Cyl. 292 cu in: 1974 | V-6 4.3L: 1993–1994 | V-8 350 cu in: 1974 | V-8 454 cu in: 1974 | V-8 5.0L: 1992–1994 | V-8 5.7L: 1992–1994]  
- G Series Van (Vandura / Rally) — 1988, 1992–1994 [V-6 4.3L: 1993–1994 | V-8 5.0L: 1992–1994 | V-8 5.7L: 1988, 1992–1994 (1988: engine VIN code M)]  
- Jimmy — 1993–1994 [V-6 4.3L: 1993–1994 (1993–1994: engine VIN code Z)]  
- P Series Van (P-series chassis) — 1992–1994 [V-6 4.3L: 1993–1994 | V-8 5.7L: 1992–1994 | V-8 6.5L Diesel: 1994 (1994: engine VIN code Y)]  
- Safari — 1993–1994 [V-6 4.3L: 1993–1994 (1993–1994: engine VIN code Z)]  
- Sonoma — 1993–1994 [V-6 4.3L: 1993–1994 (1993–1994: engine VIN code Z)]  
- Suburban — 1992–1994 [V-8 5.7L: 1992–1994]  
- Typhoon — 1993 [V-6 4.3L: 1993]  
- Yukon — 1992–1994 [V-8 5.7L: 1992–1994]  

**Oldsmobile**  
- Calais — 1987 [V-6 3.0L: 1987]  
- Cutlass — 1975–1976 [6-Cyl. 250 cu in: 1975–1976]  
- Cutlass Calais — 1989–1991 [4-Cyl. 2.5L: 1989–1991]  
- Cutlass Ciera — 1982–1992 [4-Cyl. 2.5L: 1982–1992]  
- Cutlass Cruiser — 1990 [4-Cyl. 2.5L: 1990]  

**Pontiac**  
- 6000 — 1982–1991 [4-Cyl. 2.5L: 1982–1991]  
- Grand Am — 1989–1991 [4-Cyl. 2.5L: 1989–1991]  

## Cross-references (full)

- **Gates:** 33619
- **Carquest:** 30882
- **General Motors:** 10137488, 10209045, 12553106, 14137488, 1626109
- **NAPA:** 1093
- **Pep Boys:** 35001
- **Standard Thomson:** 1093
- **Toyota:** 163250T030, 1632528010
- **Stant equivalents:** 25282, 30882

## 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 319, 332, 335, 345, 352, 353, 354, 356, 362, 371, 372, 383, 384, 386, 391, 460, 461, 462, 463, 466, 467, 468, 470, 471, 473, 474, 478, 479, 536, 537, 540, 541, 570, 571, 581). Every catalog line pairs "Thermostat Seal 25282" with "Thermostat Seal (1 Pack) 27282".
2. PartsHawk – Gates 33619 (interchange lists Stant 27282; style and dimensions): https://partshawk.com/gates-33619-engine-coolant-thermostat-seal.html
3. AutoPartsPrime – Stant 27282 ("Engine Coolant Thermostat Seal"; UPC 033342072824; vehicle list): https://www.autopartsprime.com/stant/engine-coolant-thermostat-seal/mp-27282
4. PartsHawk – Stant 27282 (fitment list): https://partshawk.com/stant-27282-engine-coolant-thermostat-seal.html