DIRECT-FIT O2 Sensor for the following MERCURY models:
| MAKE | MODEL | OEM |
| MERCURY | 8.2L 502 V8 GM | 8M2003959 |
| MERCURY | 8.6L 523 | 8M2003959 |
| MERCURY | 5.7L 350 V8 | 8M2003959 |
| MERCURY | 6.2L 377 V8 | 8M2003959 |
| MERCURY | 4.5L 274 V6 | 8M2003959 |
| MERCURY | 5.0L 305 V8 | 8M2003959 |
QUICK & EASY DROP-IN INSTALLATION: Replace all worn components to RESTORE OE performance.
FEEL THE POWER DIFFERENCE! ENGINEERED TO IMPROVE PERFORMANCE AND GUARANTEE LONGEVITY. Designed and constructed for problem-free operation in excess of 2,500 hours or 100,000 miles. Upgraded polymers, brushes, and commutators guarantee consistent flow, amperage draw, and quiet operation.
THE IDEAL REPLACEMENT FOR MERCURY #: 8M2003959
- Brand Name:
- Quantum
Quantum brand products are backed by an industry-leading lifetime warranty—the only one of its kind in the fuel pump industry. If a Quantum product fails due to a defect in workmanship or materials, we will replace it. This warranty applies only to the original purchaser and is non-transferable. Improper use or installation voids the warranty, and Quantum is not responsible for incidental costs resulting from product failure.
