A ABIGAIL Fuel Pump Assembly A3518M for GM 3.8L & 4.6L — Direct-Fit Kit with Sending Unit & Harness

A ABIGAIL Fuel Pump A3518M is a complete, direct-fit pump assembly engineered to restore reliable fuel delivery for select GM 3.8L and 4.6L models without modification.

This aftermarket fuel pump assembly replaces worn or failing OE units for a range of late-1990s and early-2000s GM sedans. Built and tested to meet OE-level standards, the A3518M package includes the pump, sending unit, float, reservoir, strainer, upgraded electrical connector, wiring harness, and a tank seal so you can install a single, complete kit. Before ordering, check the vehicle compatibility chart to match model year and engine size—no cutting or fabrication should be needed for correct fits.

Will this fuel pump fit my specific year and engine?

The A3518M assembly is designed for direct interchange with several factory part numbers and common GM platforms. Confirm fitment using the vehicle dropdown or compatibility chart on the product page to ensure the correct year, make, and engine pairing. If your vehicle matches the listed models and part numbers, installation should require no modifications.

• Compatible with Lesabre 2000–2005 (3.8L) and Bonneville 2000–2005 (3.8L / 2004–2005 4.6L variants).
• Fits Park Avenue 1998–2005 (3.8L) and Seville 1998–2004 (4.6L).
• Interchangeable with OE numbers: 323-01301, 323-01720, 263-008, 19180115, 19180117, 25322894, 25335955, E3518M, MU1163, MU92, MU277.

What components come in the A3518M fuel pump package?

This kit is sold as a complete assembly so you receive all the parts needed to restore fuel delivery and fuel-level reporting at once. The included sending unit and float replace the common wear points that cause erratic gauge readings. An upgraded connector and wiring harness are provided to help ensure a stable electrical connection.

• Electric fuel pump motor and housing for consistent pressure and flow.
• Fuel sending unit and float calibrated for factory gauge accuracy.
• Fuel reservoir, strainer, tank seal, upgraded connector, and wiring harness included.

How does this assembly address reliability and performance?

A ABIGAIL builds this replacement to match OE tolerances so it restores the original delivery characteristics and improves long-term stability. The strainer filters debris to protect the pump and engine, while the upgraded electrical connector reduces the risk of intermittent power loss. Each pump assembly is factory tested to verify operation before shipping.

• Manufactured to OE-level specifications for consistent fuel pressure and flow rates.
• Pre-installed strainer and reservoir reduce contamination-related failures.
• Factory testing helps ensure reliable start-up and fuel delivery out of the box.

What support and warranty options are available if I have problems?

A ABIGAIL provides customer support for troubleshooting, replacement, or refund requests if the part is defective or does not meet fitment expectations. Contact customer service with order details and vehicle information to speed resolution. Keep the original packaging and proof of purchase for warranty handling.

• Customer service available for troubleshooting and replacement guidance.
• Return or refund processed after verification of issue and purchase details.
• Follow installation instructions and retain receipts to expedite support.

Who is this for: This A3518M fuel pump assembly is aimed at owners and independent mechanics working on late-1990s to mid-2000s GM full-size sedans—Lesabre, Park Avenue, Deville, Seville, and Bonneville—who need a full-replacement kit that restores fuel delivery and gauge accuracy. It suits anyone seeking a direct-fit, OE-spec aftermarket option supplied as a complete install-ready package with upgraded electrical components and supporting hardware.