Marine
Attwood Universal High-Output Primer Bulb — 5/16-Inch EPA/CARB
Star rating
4.4/ 5
Customer reviews
10
- 5 stars 7
- 4 stars 2
- 3 stars 0
- 2 stars 0
- 1 star 1
Brand
attwood
Product description
Includes one high-output primer bulb intended for inline mounting between fuel tank and engine using 5/16-inch fuel line. The unit is sized for standard 5/16-inch hose and installs with the flow arrow pointing toward the engine.
Constructed from marine-rated elastomers and reinforced fittings to resist gasoline and endure both freshwater and saltwater conditions. Materials are chosen to limit fuel degradation and swelling for longer service life.
Designed to move fuel efficiently with a high-displacement chamber that shortens the number of squeezes needed to fill the line. The bulb’s check valves maintain directionality so fuel won’t return to the tank once drawn toward the motor.
Certification meets EPA and CARB requirements for emissions-related compliance, allowing use in territories that require those standards while delivering steady fuel system performance.
Usage is straightforward: cut the fuel hose to length, slide the hose onto the inlet and outlet, secure with clamps, and confirm the molded arrow aligns with fuel flow to the engine. Routine inspection and proper clamping help maintain reliable operation.
Pros
- Rapid priming action
- EPA and CARB certified
- Marine-grade materials for durability
Cons
- Priced above basic generic bulbs
- Fits only 5/16-inch hose
- Occasional defective units reported
VerdictThis high-output primer bulb provides reliable fuel delivery and fast priming for many outboard setups that use 5/16-inch hose. It’s manufactured with marine-grade materials and is certified to meet EPA and CARB standards, so it balances performance with regulatory compliance. Fitment and durability are strong for most users, though occasional defects can occur. Overall, a solid choice for anyone
Customer reviews
-
Jeff Devore 5/5
Quick delivery, solid unit
Excellent product and fast delivery!
-
RLW 5/5
Worth the extra cost
Worth paying for; outlasts cheap alternatives.
-
Alfred Flanagan II 5/5
High-quality replacement
High-quality — avoid the cheap copies.
-
4799KY 5/5
Perfect fit
Fit perfectly.
-
Richard Kinnunen 5/5
Close to OEM
Close to OEM quality at lower cost.
-
jh 5/5
Performs like OEM
Performs like OEM.
-
Debra Woodward 1/5
Received a defective unit
Mine arrived defective — would not draw fuel despite correct orientation. Returning it and will try a replacement.
-
John H. 5/5
Fast priming
Primes quickly and reliably.
-
wayne o. 4/5
Did what it should
Operated exactly as expected.
-
Terry Purvis 4/5
Holding up well
Holding up well; past cheaper ones failed quickly.
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