Browse our Top Categories. Part: Automatic Transmission Oil Cooler Hose. OEM Number: 15828750, 15908473, 25821881, 25999419. Hose Material: Metal; Rubber. Supplier Title: Transmission Oil Cooler Line. Maintenance Parts For GMC SIERRA 1500. Other Recommended Parts For GMC SIERRA 1500. All carrier-related damage or loss claims must be made with the carrier within 48 hours of item receipt. My truck no longer surges up and down and I get better Gas mileage. Thankyou for sending me the correct part. Everything went as expected. Fast charging as promised.. Better quality than the OEM.. A+ and highly recommended. Within 5 days of ordering the window I received it. There were no damages. Window was an exact fit. Aftermarket replacement mirror fits perfectly, has a great price and was delivered ahead of schedule!