Feature: 1. Fitment: Fit for 4L60E 4L65E Transmission. Replacement for Hummer (H3) (H3T); Replacement for Fleetwood, Brougham; Replacement for Chevy Asto Van, Safari, etc. 2. OE Number: 352‑2761, 77763‑01, 749703K, 7776301, S749703K are the reference part numbers. Please double check the part number of your item to ensure perfect fit. 3. Reliable Performance: Providing significant improvement in clutch performance, easy way to upgrade your vehicle and enjoy a more responsive and predictable driving experience. 4. Long Lasting: Clutch boost spring is made with iron materials that are built to last. It's designed to withstand heavy use and extreme conditions, ensuring its longevity and durability. 5. Simple Operation: Transmission boost spring is easy to install and requires no professional skills or experience. Including 10pcs springs to meet your needs. Specification: Item Type: Clutch Boost Spring Material: Iron OE: 352-2761, 77763-01, 749703K, 7776301, S749703K Fitment: 4L60E:Boost Spring, 3-4 Clutch (10 Per Bag) 1993 - 2018 4L65E:Boost Spring, 3-4 Clutch (10 Per Bag) 2001 - 2018 4L70E:Boost Spring, 3-4 Clutch (10 Per Bag) 2001 - 2018 TH700-R4:Boost Spring, 3-4 Clutch (10 Per Bag) 1982 - 1993 4L60E:Boost Spring, 3-4 Clutch (10 Per Bag) 1993 - 2018 4L65E:Boost Spring, 3-4 Clutch (10 Per Bag) 2001 - 2018 4L70E:Boost Spring, 3-4 Clutch (10 Per Bag) 2001 - 2018 TH700-R4:Boost Spring, 3-4 Clutch (10 Per Bag) 1982 - 1993 Such as: Replacement for Hummer (H3)(H3T) 2006-2010 L5 3.7L V8 5.3L Replacement for Rainer 2004-2007 L6 4.2L V8 5.3L Replacement for Escalade, ESV, EXT 1999-2007 V8 5.3L 5.7L 6.0L Replacement for Fleetwood, Brougham 1993-1996 V8 4.9L 5.7L Replacement for Limo 1993-1996 V8 4.9L 5.7L Replacement for Chevy Asto Van, Safari 1995-2007 V6 4.3L Replacement for Avalanche 2001-2009 V8 5.3L Replacement for Blazer, Jimmy 1993-2007 L4 2.2L L6 4.2L V6 4.3L V8 5.3L Replacement for Envoy, Trailblazer 1993-2009 L4 2.2L L6 4.2L V6 4.3L V8 5.3L Replacement for Camaro 1994-2002 V6 3.4L 3.8L V8 5.7L Replacement for Caprice, Wagon 1993-1996 V6 4.3L V8 5.0L 5.7L Replacement for Colorado, Canyon 2004-2011 L4 2.8L L5 3.5L L4 2.9L L5 3.7L V8 5.3L Replacement for Express, Savana 1500-2500 1996-2011 V6 4.3L V8 4.8L 5.3L 5.7L Replacement for S10, S15, Jimmy, Sonoma 1993-2004 L4 .4L 2.5L V6 4.3L Replacement for Silverado Sierra 1500-3500 1995-2010 V6 4.2L V6 4.3L V8 4.8L 5.0L 5.L V6 5.4L 5.7L 6.0L Replacement for Tahoe Yukon 1993-2009 V8 4.8L 5.0L 5.3L 5.7L Replacement for Isuzu Ascender 2003-2009 L6 4.2L V8 5.3L 5.4L Replacement for Hombre 1997-2000 L4 2.2L V6 4.3L Replacement for i280 2006 L4 2.8L Replacement for i290 2007-2009 L4 2.9L Replacement for i350 2006 L5 3.5L Replacement for i370 2007-2009 L5 3.5L Replacement for Bravada 1993-2004 L6 4.2L V6 4.3L Replacement for GTO 2004 V8 5.7L Replacement for SAAB 9-7, 9-7X 2005-2009 L6 4.2L V8 5.3L. Package List: 10 x Clutch Boost Spring Note: 1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!