SeaEagles 2Pieces135-10 Carburetor 30cc Accelerator Pump

SeaEagles 135-10 30cc accelerator pump diaphragm kit is a direct-replacement diaphragm assembly engineered to restore proper fuel metering on Holley 2300 and 4150/4150-style carburetors.

If your Holley-equipped engine hesitates on throttle or shows inconsistent acceleration, a worn or hardened accelerator pump diaphragm is often the cause. This SeaEagles kit supplies two 135-10 30cc diaphragms manufactured to match the original Holley contour and dimensions, so you can replace a failing part quickly and get back to reliable throttle response. The kit is offered as a spare or repair component for restorations, weekend builds, and day-to-day maintenance of classic cars, hot rods, and performance street engines.

How does this diaphragm improve throttle response?

The accelerator pump diaphragm pushes a metered shot of extra fuel into the carburetor when the throttle opens, preventing lean hesitation. Replacing a degraded diaphragm restores that short-term fuel boost and smooths initial engine acceleration.

• Provides a consistent 30cc fuel displacement per actuation.
• Restores factory-style delivery for crisp throttle openings.
• Reduces stumble or flat spots during quick throttle movement.

Will this fit my Holley 4150 or 2300 carburetor?

This SeaEagles 135-10 diaphragm is manufactured to the Holley 135-10 30cc specification and is intended for Holley 2300 and 4150 family carburetors that use the 30cc accelerator pump. Confirm your carburetor model and pump size before installation to ensure compatibility.

• Direct-fit design targets Holley 135-10 pump housings.
• Compatible with many Holley 2300 and 4150-series units using 30cc pumps.
• Sold as a two-piece kit so you have a spare on hand.

How simple is the installation process?

Replacing the accelerator pump diaphragm is a straightforward mechanical task for someone comfortable with basic carburetor work. The job typically requires removing the carburetor bowl or pump cover, swapping the old diaphragm for the new one, and reassembling with attention to sealing surfaces and gaskets.

• No special tools required beyond common hand tools and basic carburetor service tools.
• Follow torque and sealing guidelines to avoid leaks and ensure proper stroke.
• Installation time generally ranges from 20 to 45 minutes depending on access and experience.

What materials and longevity can I expect?

SeaEagles builds this diaphragm using durable elastomers chosen for fuel resistance and flexibility under operating temperatures. While life expectancy depends on fuel composition and operating conditions, a fresh diaphragm will maintain predictable pump action and resist hardening that causes dribble or weak shots.

• Fuel-resistant material reduces swelling and premature failure.
• Manufactured to tolerances that match OEM shape and stroke.
• Sold as a replacement pair to extend service interval and provide backup.

Who is this for: This SeaEagles 135-10 30cc diaphragm kit is aimed at classic car restorers, hot rod builders, backyard mechanics, and performance enthusiasts who maintain Holley 2300/4150 carburetors. Choose this kit if you need a direct-fit replacement to restore smooth throttle response, want a spare part for roadside readiness, or are rebuilding a carburetor to factory-style specifications. Always verify your carburetor’s pump size and model before purchasing to ensure correct fitment.