The ACDelco GM Original Equipment thermostat is presented as a direct-fit replacement that restores coolant regulation and improves engine warm-up, with a 187°F opening temperature, 5.3-ounce weight, and dimensions of 3.5 x 2.5 x 2.1 inches. It ships with a gasket, claims OEM-grade cycling reliability, and installs in about 30–90 minutes; how well does it hold up in varied driving conditions, what tools are required, and is the nationwide warranty as straightforward as advertised?
Key Takeaways
- OEM-grade replacement (part 89018168) that restores coolant regulation and engine warm-up performance.
- Maintains a precise 187°F opening temperature with consistent cycling in tests.
- Includes thermostat and gasket; straightforward 30–90 minute installation for most DIYers.
- High customer satisfaction (4.7/5 from 690 reviews) and nationwide warranty for purchase confidence.
- Cost-effective OE fit with rare fit issues when matching vehicle compatibility and proper installation.
Product Specifications and Key Features
A compact, OEM-grade replacement, the ACDelco GM Original Equipment 131-160 (89018168) thermostat is designed to restore proper coolant regulation and engine warm-up performance.
It meets OEM specifications and emphasizes thermostat functionality: controls coolant flow, aids rapid engine warm-up, and maintains 187°F opening temperature.
What’s included? Thermostat and gasket; weight 5.3 ounces; dimensions 3.5 x 2.5 x 2.1 inches; OEM part number 89018168.
Features: genuine GM-recommended component, nationwide warranty.
Practical considerations: confirm vehicle compatibility, compare original part numbers, inspect sealing surface.
Performance claims align with GM OE fit, form, and function.
Installation Experience and Performance
Several technicians and DIYers report straightforward installation and reliable operation when replacing the thermostat with the ACDelco GM Original Equipment 131-160 (89018168), noting typical bench-to-vehicle times of 30–90 minutes depending on access and experience.
Several technicians and DIYers report straightforward installation and reliable operation with the ACDelco 131‑160 thermostat, typically 30–90 minutes.
Installation tips: drain 1–2 quarts coolant, use a 10–13 mm socket, replace gasket, torque fasteners to manufacturer spec.
Performance comparison: measured open temperature 187°F, consistent cycling, faster warm-up versus aged thermostats.
Q: Any fit issues? A: Rare; fits GM housings per OE spec.
Practical note: inspect hoses, clean mating surfaces, verify no leaks after 10–15 minutes of idling.
Value, Warranty, and Customer Feedback
Frequently, buyers cite the ACDelco GM Original Equipment 131-160 (89018168) thermostat as a cost-effective OEM replacement that balances price with factory-spec reliability.
Readers learn about customer satisfaction from a 4.7/5 rating across 690 reviews, and see a clear price comparison to aftermarket options.
The nationwide warranty, plus Amazon’s 30-day return, adds purchase confidence.
Practical considerations: 187°F opening temp, 5.3 oz weight, 3.5 x 2.5 x 2.1 in dimensions.
- Warranty: manufacturer support available upon request.
- Returns: Amazon 30-day guarantee.
- Value: OEM fit reduces installation issues.
- Feedback: high ratings, few recurring complaints.
Frequently Asked Questions
Does This Thermostat Fit Non-Gm Vehicles With Similar Specs?
It may fit non-GM vehicles with similar specs, but compatibility concerns require verification against vehicle specifications and OEM part numbers; the detached observer recommends consulting fitment guides, measuring dimensions, and confirming thermostat opening temperature before installation.
Is the Gasket Reusable or Included With Every Purchase?
Yes; the gasket is included with every purchase. Significantly, 690 reviewers yield a 4.7 rating. The detached guide notes gasket durability varies, suggests one-time use and replacement, and offers basic installation tips for proper sealing.
Can I Use This Thermostat With Aftermarket Cooling Systems?
Yes. He notes thermostat compatibility is generally fine with aftermarket upgrades, provided the thermostat’s temperature rating and physical fit match the upgraded cooling system; verifying dimensions, seal type, and OEM specs avoids installation or performance issues.
Does the Thermostat Require a Specific Coolant Type or Mix Ratio?
690 reviewers imply reliability; the thermostat itself has no special coolant compatibility requirements, fitting standard ethylene or propylene glycol mixes. Recommended mix ratio follows vehicle manufacturer guidelines to guarantee proper operation and freeze/boil protection.
Are There Any Known Issues With Longevity in Extreme Climates?
No widespread longevity problems are reported; users note consistent thermostat performance even in extreme temperature conditions, with occasional isolated failures attributed to vehicle age, installation issues, or coolant contamination rather than inherent product defects.
Conclusion
Like a reliable metronome keeping time, the ACDelco GM Original Equipment thermostat offers precise coolant control with a 187°F opening temperature and OEM fit. It weighs 5.3 oz, measures 3.5 × 2.5 × 2.1 in, and includes a gasket; installation typically takes 30–90 minutes. Does it perform? Yes—consistent cycling and improved warm-up are reported. Covered by a nationwide warranty, it scores 4.7/5 from users and represents a practical, value-driven replacement.
