This USA Standard 29‑tooth third gear is a replacement mainshaft third gear for NV4500 manual transmissions, listed for 2001–2006 Chevrolet Silverado 2500HD applications. It is specified as the 29‑tooth third gear for NV4500 mainshafts. The 29‑tooth sizing is noted for NV4500 applications beginning in the mid‑1990s, making it suitable for many 1995+ NV4500 service needs, including the 2001–2006 Silverado 2500HD.
USA Standard 01-06 Chevrolet Silverado 2500 HD NV4500 Manual Transmission 3rd Gear (29-Tooth)