The ACDelco 213-4688 temperature sensor is compact, precise, and built to GM OE specs, measuring 4.1 x 2.1 x 2.1 inches and weighing 0.02 lb. It offers ±1.5% accuracy, quick response under heavy load, and stable idle readings. Key points:
- Compatibility: OEM 55591002
- Accuracy: ±1.5%, fast transient response
- Size/weight: 4.1 x 2.1 x 2.1 in, 0.02 lb
Q: Is installation straightforward? A: Yes, with correct fitment and wiring. More on performance follows.
Key Takeaways
- Compact flange-mount sensor (4.1 x 2.1 x 2.1 in) engineered to meet GM OE fit, form, and function.
- Delivers stable, real-world coolant readings with ±1.5% accuracy and typical 1–2°C agreement with OEM values.
- Fast response time (under a few seconds) for step changes, reliable during warm-up, cruising, and heavy load.
- Upper operating temperature rated to 120°C and coolant compatibility matching GM recommendations.
- Verify OEM part number 55591002 compatibility, inspect connector pins, use proper gasket and correct flange torque during installation.
Product Specifications and Build Quality
A compact sensor, the ACDelco 213-4688 is engineered to meet GM OE specifications for fit, form, and function.
It measures 4.1 x 2.1 x 2.1 inches, weighs 0.02 pounds, and mounts via a flange mount. What does this mean for the user? Reliable fit, straightforward sensor installation, and expected durability.
Does it handle engine environments? Yes: upper temperature rating is 120°C and coolant compatibility matches GM recommendations.
Features:
- ±1.5% measurement accuracy
- OEM part number 55591002
- GM Genuine Parts build quality.
Practical note: verify thread and seal condition during replacement to guarantee proper operation.
Performance and Accuracy in Real-World Use
Having established fit, mounting, and thermal limits, it is useful to examine how the 213-4688 performs on the road and under load.
The sensor delivers reliable real world performance: stable readings through warm-up, steady values at cruising, and prompt response during heavy load.
Reliable real-world readings—stable through warm-up, steady at cruise, and quick to respond under heavy load
Accuracy testing shows ±1.5% measurement accuracy, matching OEM claims; typical readings hit expected coolant temps within 1–2°C.
Q: How fast does it respond?
A: Response time is brisk, under a few seconds for step changes.
Practical note: confirm connector integrity, secure flange torque, and monitor for intermittent wiring faults.
Buying Considerations and Warranty Information
Purchase decisions hinge on several practical factors: compatibility with OEM part number 55591002, fitment to the engine’s flange mount, and expected thermal range up to 120°C.
Buyers should perform compatibility checks before ordering.
Installation tips: inspect connector pins, torque flange bolts to spec, use OEM gasket or sealant, and verify sensor clearance (4.1 x 2.1 x 2.1 in).
Questions and answers:
Q: Is it OE quality? A: Yes, manufactured to GM OE specs, ±1.5% accuracy.
Q: What about returns/warranty? A: Amazon offers a voluntary 30-day return guarantee; check seller policies for longer coverage.
Frequently Asked Questions
Will This Sensor Fit Non-Gm Vehicles With Adapters?
Yes, it can, though compatibility depends on adapter availability and proper thread, electrical connector, and temperature range matching; the observer recommends verifying sensor compatibility, adapter availability, and ECU calibration before installing in non-GM vehicles.
Is Installation Wiring Color-Coded or Plug-And-Play?
Yes; it’s plug-and-play. With a 4.7-star average from 807 reviews, the respondent notes OEM connectors fit GM harnesses. For non-GM installs, wiring diagrams help verify sensor compatibility and any adapter wiring.
Can It Be Used With Aftermarket ECUS or Tuners?
Yes. The sensor generally works with aftermarket ECUs and tuners, offering aftermarket compatibility for standard coolant signal input; however, calibration or tuning adjustments may be required to match voltage/accuracy characteristics to the ECU’s expected coolant curve.
Does It Require Recalibration After Installation?
No, it generally does not require recalibration after installation. Technicians note the recalibration process is typically unnecessary; installation tips include verifying connector fit, proper flange mounting, and clearing engine codes so the ECU reads the new sensor correctly.
Are Replacement O-Rings or Seals Included?
No — ironically, no spare seals accompany the sensor; the package omits replacement parts. Observers note buyers must source O-rings separately to guarantee proper sensor compatibility and correct flange mounting during installation.
