---
id: 20261005_160000_stant-27259-thermostat-seal-fitment-guide
title: Stant 27259 Thermostat Seal – Fitment Guide for Toyota (1971–1992)
category: Parts Catalog
corpus_topic: PartsCatalog
site_category: Parts Catalog
summary: Find the exact vehicles that fit the Stant 27259 thermostat seal (also 25259, Gates 34039). 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 27259 thermostat seal (also 25259, Gates 34039). 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 27259 thermostat seal fit, and where can I buy one?
keypoints:
- 'Part Number: Stant 27259 (single pack); same seal as Stant 25259 in the Stant catalog; Gates equivalent 34039'
- 'Size: about 2.0 in. outside diameter (Gates 34039 lists 2.01 in., MotoRad MG359EA 1.98 in.; their listed inside diameters differ, 1.63 vs 1.43 in., so compare with your old seal)'
- Stant 1928–1994 catalog lists it for 1 make(s), 1971–1992
- Price is $9.95 plus $3.00 for shipping.
tags:
- stant
- stant-27259
- thermostat-seal
- water-outlet-seal
- restoration-parts
- obsolete-auto-parts
- fitment-guide
- toyota
consent: true
agent: misty
created: '2026-10-05T23:40:24Z'
updated: '2026-10-05T23:40:24Z'
date: '2026-10-05'
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enrich_status: ok
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pipeline_filename: stant-27259-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
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sycophancy: 0
truth_score: 9
entropy: 3
predicted_narrative_arc: owner-searching-to-part-found
share_url: https://donsobsoleteautoparts.com/kb/PartsCatalog/stant-27259-thermostat-seal-fitment-guide.md
source_url: ''
part_number: Stant 27259
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 27259 Thermostat Seal – Fitment Guide for Toyota (1971–1992)

**Stant 27259 Engine Coolant Thermostat Seal – from Don's Obsolete Auto Parts**

Keep your car or truck on the road with a genuine Stant 27259, the Stant thermostat seal for the Toyota Land Cruiser inline six, 1971–1992 (237 and 258 cu in, 4.2L and 4.0L). 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 27259 (single pack); same seal as Stant 25259 in the Stant catalog  
- Type: Engine coolant thermostat / water outlet seal (rubber, square-cut style per the Gates equivalent)  
- Size: about 2.0 in. outside diameter (Gates 34039 lists 2.01 in., MotoRad MG359EA 1.98 in.; their listed inside diameters differ, 1.63 vs 1.43 in., so compare with your old seal)  
- Cross-references: Gates 34039; Carquest 30959; Motorad MG359; NAPA 1059; Toyota 9043043002; Stant equivalents 25259, 30959  

Stant's own 1928–1994 application catalog lists the 27259 for 1 make from 1971 to 1992. It's a good fit for restoration projects, weekend drivers and mechanics keeping older vehicles running.

**Compatible Makes & Models (from the Stant catalog)**  
- **Toyota** (1971–1992): Land Cruiser (1971–1992)  

**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 27259 Thermostat Seal: The Right Seal for Toyota 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 27259 across 1 make (Toyota). Cross-reference tables tie it to the Stant 25259 and Gates 34039, which makes it easy to match against an old parts list or a worn-out seal.

**Real-World Fitment Examples**  
- 1971–1974 Toyota Land Cruiser 6-Cyl. 237 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 27259 is about 2.0 in. outside diameter.  
- 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 27259

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

**Toyota**  
- Land Cruiser — 1971–1992 [6-Cyl. 237 cu in: 1971–1974 | 6-Cyl. 258 cu in: 1975–1979 | 6-Cyl. 4.0L: 1988–1992 | 6-Cyl. 4.2L: 1980–1987]  

## Cross-references (full)

- **Gates:** 34039
- **Carquest:** 30959
- **Motorad:** MG359
- **NAPA:** 1059
- **Toyota:** 9043043002
- **Stant equivalents:** 25259, 30959

## 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 616). Every catalog line pairs "Thermostat Seal 25259" with "Thermostat Seal (1 Pack) 27259".
2. PartsHawk – Gates 34039 (interchange lists Stant 27259; style and dimensions): https://partshawk.com/gates-34039-engine-coolant-thermostat-seal.html
3. PartsHawk – MotoRad MG359EA (interchange lists Stant 27259; rubber, square-cut; fits 1971–1992 Toyota Land Cruiser): https://partshawk.com/motorad-mg359ea-engine-coolant-thermostat-seal.html
4. Amazon – Stant 27259 Thermostat Seal (Stant description: molded rubber thermostat/water-outlet seal, no sealer or RTV required): https://www.amazon.com/Stant-27259-Thermostat-Seal/dp/B000C823G4
5. yoyopart – Stant 27259 application table (Toyota Land Cruiser 1971–1974, 1975–1987, 1988–1992): http://www.yoyopart.com/oem/11185677/stant-27259.html