234-4018 234-4012 Up & Downstream O2 Sensor for Silverado Savana
- OE 234-4018 and 234-4012, also 19178116
- GMC Savana, Sierra, Yukon and Chevy Astro, C1500, C2500, Silverado
- 4 pieces, upstream and downstream set
- 0% to 25% range, 1.5% accuracy
- Exhaust mount, push-pull output
- 0.47 kg, stainless steel
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
An upstream and downstream oxygen sensor set for the GM trucks and vans named in the listing, with the OE numbers spelled out. The item counts differ between fields, so confirm what arrives.
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ASIN: B0DJ7F8KDJModel: SYES06524-4-002Category: Oxygen
Overview
Not a single replacement sensor, this is a set meant for both the upstream and downstream positions on the GM models in the listing. Each screws into the exhaust and sends an output signal to the engine computer.
The OE numbers are the reference to compare with your old sensors, and the model list covers several GMC and Chevrolet trucks and vans. The count is stated in more than one way, with a pair in the item field and four pieces in the unit field, which deserves a check before buying.
Who it's for
GM truck and van owners whose old sensors carry the numbers in the title are the target. Owners of other makes, or engines not named in the model list, should not assume a fit.
Pros and cons
- OE numbers clearly listed
- Upstream and downstream positions covered
- Stainless steel construction
- Measuring range and accuracy stated
- Item counts conflict between fields
- Wire length not stated
- No bullets or description supplied
Performance notes
The sensor reads oxygen in the exhaust stream and sends a signal the engine computer uses to adjust fuel delivery. Placement matters because the upstream sensor guides the mixture and the downstream one checks catalytic converter work, so each set must go in the right bank and position.
Specifications
| Brand | SYKRSS |
|---|---|
| Model | SYES06524-4-002 |
| Dimensions & fit | |
| Weight | 0.47 kg |
| Capacity & performance | |
| Output type | Push-Pull |
| Measuring range | 0% - 25% |
| Construction & materials | |
| Material | Stainless Steel |
| Compatibility & installation | |
| Mounting | Exhaust Mount |
| Included components | |
| Unit count | 4 Count |
| Other details | |
| Fits | OE 234-4018 234-4012 19178116, up and downstream set |
| Measurement accuracy | 1.5% |
| Part number | SYES06524-4-002 |
Frequently asked questions
What is in the box with the SYKRSS 234-4018 sensor set?
The highlight says an up and downstream set of 4 pieces, while the item and pack fields show 2. The listing does not break down which sensor goes where.
Which vehicles does the SYKRSS sensor set cover?
The listing names GMC Savana, Sierra and Yukon, plus Chevy Astro, C1500, C2500 and Silverado. Year ranges and engines are not given.
Can I use one sensor from this set for a different truck?
Not safely. The listing ties the set to specific OE numbers and model names, so check those against your old sensors first.