BTR 87mm Gen IV LS Throttle Body - BTR-TB-87LS

87 mm TBSS/NNBS-style, 6-pin drive-by-wire throttle body for compatible Gen IV LS engines with a 4-bolt intake. Services GM OEM part numbers 12629992, 12601387, and 2173151. BTR notes it can replace long-snout LS3 throttle bodies 12605109/19420707 as a space-saving option with tuning adjustments and relearn.

Applications include compatible 4.8–6.2L gasoline and supercharged V8 models from 2009–2015, including Cadillac CTS-V/Escalade, Chevrolet Silverado/Avalanche/Express/Suburban/Tahoe, GMC Sierra/Savana/Yukon, Hummer H2/H3, and Saab 9-7X. Verify connector and calibration compatibility before ordering.