• Fast shipping

  • Free help & advice

  • Hassle-free returns

  • Factory direct prices

Welcome Aboard!

FLASHSALE26
SeaSierra

Fuel Pump Kit – Fits Mercury 30–300HP TwoStroke Outboards (Replaces 14360A78, 14360A16, 14360A41, 14360A43)

$250.49

Worry-free returns

Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.


If the return is due to our error or a defective item, we’ll make it right.


Please contact us before returning any item.

Delivery and Shipping

Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


International delivery times may vary due to customs processing.


Tracking information will be provided once your order ships.

If you have any questions, feel free to email us at info@seasierra.com, and we’ll get back to you within 20–36 hours.

Product Details

This is a direct-replacement Fuel Pump Kit – Fits Mercury 30–300HP TwoStroke Outboards (Replaces 14360A78), designed to restore original performance and reliability. It fits a wide range of Mercury Marine TwoStroke engines from 1996 to 2008, including various 3.0L EFI and DFI series models.

This kit directly replaces Mercury OEM part number 14360A78 and superseded versions including 14360A16, 14360A41, and 14360A43.

  • Engineered for direct OEM-replacement fit and function.
  • Designed for use with standard marine gasoline.
  • Includes all necessary gaskets, springs, and diaphragms for a full rebuild.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand Part Number Notes
Mercury 14360A78 Current primary replacement
Mercury 14360A16 Superseded by 14360A78
Mercury 14360A41 Superseded by 14360A78
Mercury 14360A43 Superseded by 14360A78

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Mercury engines, compatibility is often determined by serial number. Ensure your engine's serial falls within the specified range.

Model Rated HP Stroke Years OEM Part No. Notes
35 Jet 35 2-Stroke 0G590000 thru 0T408999 14360A78 Serial number range
30-45HP 30-45 2-Stroke 0G055314 thru 0T979999 14360A78 3 Cylinder models
50-60HP 50-60 2-Stroke 0B122930 thru 0T979999 14360A78 3 Cylinder models
75-90HP 75-90 2-Stroke 0D283222 thru 0T979999 14360A78 3 Cylinder models
45 & 80HP Jet 45, 80 2-Stroke 0D000750 thru 0T979999 14360A78
100-125HP 100-125 2-Stroke 0A7222997 thru 0T999999 14360A78 4 Cylinder carbureted
105HP & 140HP Jet 105, 140 2-Stroke 0D082000 thru 0T178499 14360A78 Carbureted
225-250HP 3.0L 225-250 2-Stroke 0G129222 thru 0T408999 14360A78 Carbureted
225HP 3.0L 225 2-Stroke 0G590000 thru 0T408999 14360A78 EFI, SeaPro, Marathon
200-250HP 3.0L 200-250 2-Stroke 0T409000 thru 2B528096 14360A78 EFI, SeaPro, Marathon
250HP 3.0L 250 2-Stroke 0G760300 thru 0T408999 14360A78 EFI
300HP 3.0L 300 2-Stroke 0G610221 thru 0T105297 14360A78 EFI, Pro Max, SuperMagnum
300XHP 3.0L 300 2-Stroke 0T235084 thru 0T999587 14360A78 EFI, Pro Max
200HP 2.5L 200 2-Stroke 0G386496 thru 0T598999 14360A78 DFI
150-200 EFI 150-200 2-Stroke 0D935000 thru 0G610079 14360A78
V135-200HP 135-200 2-Stroke 0D082000 thru 1B226999 14360A78 Carbureted
XR-6 2-Stroke 0G303046 thru 1B226999 14360A78
30 (2 CYL.) 30 2-Stroke 0G760300 thru 0T979999 14360A78 From secondary source
30 (2 CYL.) 30 2-Stroke 0P017000 thru 0P325499 14360A78 From secondary source
40 (2 CYL.) 40 2-Stroke 0G760300 thru 0T979999 14360A78 From secondary source
50 (3 CYL.) 50 2-Stroke 0P325500 & Up 14360A78 From secondary source
55 (3 CYL.) 55 2-Stroke 0P325500 & Up 14360A78 From secondary source
60 (3 CYL.) 60 2-Stroke 0P325500 & Up 14360A78 From secondary source
65 JET (3 CYL.) 65 2-Stroke 0T980000 THRU 0T999999 14360A78 From secondary source
115 (4 CYL.) 115 2-Stroke 0P325500 & Up 14360A78 From secondary source
125 (4 CYL.) 125 2-Stroke 0P325500 & Up 14360A78 From secondary source

Technical Specs

Product Type
Mechanical Fuel Pump Kit
Installation
Direct OEM replacement
Fuel Type
Gasoline (marine)
Housing Color
Black
Weight
1.80 lbs (0.82 kg)
Warranty
OEM Mercury Marine warranty
Other Technical Attributes
Complete kit with gaskets, springs, and diaphragms

What’s in the Box

  • 1 x Fuel Pump Kit (14360A78) - Includes multiple gaskets, springs, and diaphragms for complete pump rebuild

Installation Notes

  1. Disconnect the battery and relieve all fuel system pressure before beginning work.
  2. Carefully disconnect the fuel inlet and outlet lines from the old pump, noting their orientation.
  3. Remove the mounting bolts securing the old fuel pump and remove the pump from the engine block.
  4. Thoroughly clean the engine's mounting surface to ensure a proper seal with the new gasket.
  5. Install the new fuel pump using the provided gaskets. Ensure the pump arm or lever is correctly aligned with the engine's camshaft or pushrod.
  6. Securely tighten the mounting bolts to the manufacturer's specified torque. Do not overtighten.
  7. Reconnect the fuel lines to the new pump, ensuring all fittings are tight to prevent leaks.
  8. Reconnect the battery, prime the fuel system, and start the engine. Check carefully for any fuel leaks around the pump and fittings.

Troubleshooting & FAQ

How do I confirm this fuel pump fits my specific Mercury outboard?

The most reliable way is to match your engine's serial number to the ranges listed in the "Engine & Model Compatibility" table. Model years can be ambiguous, but serial numbers provide precise identification.

What are common symptoms of a failing two-stroke fuel pump?

Signs include engine bogging down at high RPMs, difficulty starting, rough idling, stalling, and loss of overall power. A visible fuel leak from the pump body is also a clear indicator of failure.

Is this a complete kit for a rebuild?

Yes, this kit includes the main pump assembly along with all the necessary gaskets, springs, and diaphragms required for a standard replacement, allowing you to fully rebuild your existing pump housing.

How often should a mechanical fuel pump be replaced?

There is no fixed replacement interval. Pumps should be inspected regularly and replaced at the first sign of wear, leakage, or performance degradation. Diaphragms can degrade over time, especially with modern fuel blends.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

  • Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
  • This is an aftermarket replacement, not an OEM component.
  • Professional installation is recommended for safety and performance.

About Sea Sierra

  • Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
  • Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
  • Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Back to top