3273453|Water Pump for 2001 GMC Sierra 2500 HD 8.1L - WP3181XP24. This Water Pump fits the 2001 GMC Sierra 2500 HD equipped with the 8.1L engine. It delivers exceptional reliability and is essential for restoring factory engine performance.. 2001 GMC Sierra 2500 HD 8.1L Engine Water Pump - WP3181XP24 Also fits the following vehicles: 2005 Chevrolet Silverado 3500 8.1L Engine Water Pump, 2006 Chevrolet Silverado 3500 8.1L Engine Water Pump, 2001 Chevrolet Suburban 2500 8.1L Engine Water Pump, 2002 Chevrolet Suburban 2500 8.1L Engine Water Pump, 2003 Chevrolet Suburban 2500 8.1L Engine Water Pump, 2004 Chevrolet Suburban 2500 8.1L Engine Water Pump, 2005 Chevrolet Suburban 2500 8.1L Engine Water Pump, 2006 Chevrolet Suburban 2500 8.1L Engine Water Pump, 2001 GMC Sierra 2500 HD 8.1L Engine Water Pump, 2002 GMC Sierra 2500 HD 8.1L Engine Water Pump, 2003 GMC Sierra 2500 HD 8.1L Engine Water Pump, 2004 GMC Sierra 2500 HD 8.1L Engine Water Pump, 2005 GMC Sierra 2500 HD 8.1L Engine Water Pump, 2006 GMC Sierra 2500 HD 8.1L Engine Water Pump, 2001 GMC Sierra 3500 8.1L Engine Water Pump