Sierra Marine Engine Parts & Drive Parts   Sierra Marine is a trusted name in aftermarket replacement boat engine and drive parts. Sierra’s products are designed and engineered to exceed the high horsepower demands of today’s engines in the harshest marine environments. All Sierra products meet or exceed the original equipment part it replaces.   If you need help finding a part, we need, Make, Model, Year, Horsepower, and Serial number of your engine.   Warning: We can no longer ship engine parts International or to California Due to Prop 65.

Temperature & Pressure Relief Valve - 1/2" Valve with 4" Probe Protect your RV water heater from excessive temperatures and water pressure with corrosion-resistant metal T&P valves. All valves are factory set at 150 PSI and are crafted with no gaskets and epoxy-coated probes to prevent corrosion buildup. WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Pressure Relief Valve - 75 PSI Water Heater Pressure Relief valve. Water heater temperature and pressure relief valves, or T&P valves, are a safety feature found on all tank water heaters. It's designed to open temporarily and discharge short spurts of water when the temperature exceeds about 210 degrees F, and it releases pressure if the tank gets above 75 psi. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Cat Pump 7595 Relief Valve The CAT Pump 7595 is a high flow pressure relief valve constructed with brass. Mounts directly into the discharge line. Provides protection to the pump and system against deadhead and excessive pressure. Ability to set the system pressure for single and multiple gun and pump systems. Specifications: Max Flow: 53 GPM Min Flow: 1 GPM Max Pressure: 2600 PSI Maximum Relief Setting: 2860 PSI Inlet Port Size: 3/4" NPT(F) Discharge Port Size: 1/2" NPT(F) Accessory Type: Relief Valves Material: Brass By-Pass Port: 1/2" NPT(F)  Dimensions: 6.25 x 2.05 x 1.46 Features: Provides system pressure setting and protection for single or multiple gun and pump systems. Heavy duty, high flow design quickly and conveniently mounts directly into discharge line. Functions as a secondary pressure relief to assure system and pump protection from deadhead or excessive pressure. NBR O-rings

Quick Pressure Relief Valve for All Sigmar & B3 Heaters Pressure Relief Valve - 1/2" fitting, brass chrome plated, pressured up to 6 bars Bristish standard thread fitting Overall length 1-3/4" Relief/non return that allows discharging of the water heater in case of disuse

Cat Pump 7190 Relief Valve This is a secondary protection device that should be installed in addition to the primary pressure regulator or unloader. It is typically set approximately 200 PSI above the system pressure set on the primary valve. It offers additional protection to the pump and is recommended in larger capacity and higher pressure systems.   Technical Specifications Max Flow: 6.5 Min Pressure: 400 Max Pressure: 5000 Inlet Port Size: 0.37 Discharge Port Size: 0.37 Type of Accessory: Relief / Pop-Off Valve Material: Brass (BB)

Hypro 3300-0001, 3/4" M X 3/4" F Bronze Relief Valve 400 PSI Ports-NPT Inlet (M) Outlet (F): 3/4" M x 3/4" F Max PSI: 400 Body Material: Cast Bronze Valve Material: Stainless Steel Ball

Hypro 3300-0002, 1/2" M X 1/2" F Bronze Relief Valve 200 PSI Ports-NPT Inlet (M) Outlet (F): 1/2" M x 1/2" F Max PSI: 200 Body Material: Cast Bronze Valve Material: Stainless Steel Ball

Hypro 3300-0015, 3/4" M X 3/4" F Nylon Relief Valve Ports-NPT Inlet (M) Outlet (F): 3/4" M x 3/4" F Max PSI: 150 Body Material: Nylon Valve Material: Nylon

Hypro 3300-0084, Pressure Regulation & Relief Valve 17.2 Bar max pressure  60 degrees C max temperature Mount off line on a tee Nylon body and valve seat 3/4" M thread inlet 3/4" F thread bypass

Hypro 3300-0094, 1" M X 3/4" F Bronze Relief Valve 150 PSI Ports-NPT Inlet (M) Outlet (F): 1" M x 3/4" F Max PSI: 150 Body Material: Cast Bronze Valve Material: Stainless Steel Ball

Hypro 9910-110122 Relief Valve Seat Viton HYPRO VITON RELIEF VALVE SEAT (STANDARD) FOR 9910-GS40GI

Hypro 9910-Kit-1990 Relief Valve for D252 This control unit, for mounting on pump model 9910-D252, is capable of handling flow rates up to 6 gpm (22.7 lpm) and pressures up to 290 psi (20 bar). It includes one adjustable relief valve, one pressure/bypass selector, 5/8" HB bypass port and 3/8" HB port.

Temperature & Pressure Relief Valve 1/2" NPT pressure/temperature relief valve for 6 and 11-gallon hot water heaters. Features:  Maximum PSI: 100 Threads: 1/2" NPT

Roper Pump 1AM03 Pump W/O Relief Valve Mech Roper A Series Gear Pump model 1AM03   Cast Iron Housing/ Ductile Iron Gears/ Bronze Bushings/ Buna Mechanical Seal/ No Relief Valve 3/4″ NPT Ports General Transfer Applications