Trans-Dapt Performance Products 6012 Water Neck O-Ring Features: Water Neck O-Ring Height: 0.13 Width: 3.00 Length: 3.00 Weight: 0.35 lbs Fitment: 2003/Chevrolet/Trailblazer EXT/North Face Sport Utility 4-Door/5.3L 325Cu. In. V8 GAS OHV Naturally Aspirated^^2003/Chevrolet/Trailblazer EXT/LT Sport Utility 4-Door/5.3L 325Cu. In. V8 GAS OHV Naturally Aspirated^^2003/Chevrolet/Trailblazer EXT/LS Sport Utility 4-Door/5.3L 325Cu. In. V8 GAS OHV Naturally Aspirated^^2003/Chevrolet/Tahoe/Z71 Sport Utility 4-Door/5.3L 323Cu. In. V8 GAS OHV Naturally Aspirated^^2003/Chevrolet/Tahoe/Z71 Sport Utility 4-Door/5.3L 323Cu. In. V8 FLEX OHV Naturally Aspirated^^2003/Chevrolet/Tahoe/Z71 Sport Utility 4-Door/4.8L 294Cu. In. V8 GAS OHV Naturally Aspirated^^2003/Chevrolet/Tahoe/LT Sport Utility 4-Door/5.3L 323Cu. In. V8 GAS OHV Naturally Aspirated^^2003/Chevrolet/Tahoe/LT Sport Utility 4-Do...