Product Overview
NAPA Water Pump 43315
The NAPA 43315 Water Pump delivers reliable cooling system performance by maintaining steady engine temperature and helping prevent overheating during demanding use. Built for long-term durability, it provides consistent coolant flow and supports overall engine longevity.
Specifications
Type: Engine water pump
Function: Circulates coolant to regulate engine temperature and prevent overheating
Construction: Durable housing with precision-engineered pump components
Application: Direct-fit replacement for select GM trucks, vans, SUVs, and work vehicles
Includes: Pump assembly (accessories may vary by application)
Vehicle Compatibility (Selected Applications)
Cadillac
Escalade: 1999–2000
Chevrolet
Silverado 1500 (2WD/4WD): 1999–2006
Silverado 1500 Classic: 2007
Silverado 1500: 2007–2013
Tahoe: 1996–2000
Suburban C1500 / C2500 / K1500 / K2500: 1996–1999
Express & G-Series Vans: 1996–2014
Blazer: 1996–2005
TrailBlazer: 1999–2001
S10 Pickup: 1996–2004
Astro Van: 1996–2005
C/K2500 & C/K3500: 1996–2000
C3500HD: 1997–2000
W3500 & W4500 Tilt Cab: 1999–2003
P30 & P35 Step Van (incl. Non-US/Canada): 1996–2001
GMC
Sierra 1500 (2WD/4WD): 1999–2006
Sierra 1500 Classic: 2007
Sierra 1500: 2007–2013
Yukon: 1996–2000
Jimmy: 1996–2005
Sonoma: 1996–2004
Safari Van: 1996–2005
Workhorse
FT & P-Series Step Vans: 2000–2004
Freightliner / Isuzu / Bus Applications
Isuzu NPR / NPR-HD Tilt Cab: (various years)
Mid Bus SW: 1998
Thomas Built Minotour: 2001
Note: Verify compatibility with your exact year, engine, and configuration before purchasing.
Features
Helps maintain proper engine temperature and cooling efficiency
Durable construction for long-lasting service
Direct-fit replacement for accurate alignment and sealing
Suitable for OEM-quality replacement needs
Notes
Confirm fitment by year, model, engine, and cooling system specifications before ordering
Replace gasket or seal as required during installation
Refill and bleed the cooling system after installation for best performance
