AP3622S Fuel Pump Assembly for Chevy C/K 1500 2500 3500 - Direct Fit

In this review the AP3622S fuel pump assembly is judged primarily on fit, installation ease, and value for owners of mid-1990s Chevrolet and GMC C/K trucks. The bottom line: this is a direct-replacement electric sending unit that suits 1996-1997 C1500, C2500, C3500, K1500, K2500 and K3500 models with 4.3L, 5.0L, 5.7L or 7.4L engines, and its single biggest selling point is straightforward compatibility and a simple install that gets an older truck running again without expensive dealer pricing. Our review highlights where it excels and what buyers should watch for.

Key Features

• Direct fitment: Fits 1996 and 1997 Chevrolet and GMC C/K 1500, 2500 and 3500 trucks with the listed V6 and V8 engines so replacement is usually plug-and-play for matching models.
• OE interchange compatibility: Manufactured to match OE standards and intended to replace Airtex E3622S, XL3Z 9H307-BB, PFS105 and similar units for ease of sourcing parts.
• Built-in sending unit: Includes the electric sending unit so fuel is sent from the tank to the engine and the fuel level signal is maintained with the assembly.
• Quality control: Each unit is tested before shipping, which reduces the chance of receiving a defective pump and simplifies installation for DIY mechanics.
• Warranty support: Backed by a one year 365-day unlimited mileage warranty, providing buyers recourse if the unit fails within the first year.

Who It's For

This assembly is aimed at owners and independent mechanics working on 1996-1997 Chevy and GMC C/K trucks who need a cost-effective, direct-replacement fuel pump and sending unit. It is particularly well suited for someone comfortable verifying fitment and performing a fuel tank service or willing to have a shop install the unit for a modest labor cost.

It is not the best choice for vehicles outside the listed years and engine sizes or for buyers seeking an extended-lifetime high-performance pump; some customers have reported mixed long-term durability, so owners needing a heavy-duty or long-wear unit for extreme duty should consider upgraded options.

Pros & Cons

Pros

• Good fit for the specified 1996-1997 Chevy/GMC C/K applications, making replacement straightforward.
• Includes the fuel sending unit so fuel level readings remain functional after installation.
• Competitive value compared with dealer pricing and comes with a one year warranty for peace of mind.

Cons

• Durability is mixed in user reports, with some buyers noting it failed in under a year, so longevity is not guaranteed.

Specifications

Our Verdict

The AP3622S is a practical, cost-conscious replacement for the specified 1996-1997 Chevy and GMC C/K trucks that delivers straightforward compatibility and easy installation for DIYers and independent shops. It offers solid value and a one year warranty, but prospective buyers should accept that long-term durability may vary; for a budget-friendly direct fit, it is a sensible choice.

Frequently Asked Questions

Will this unit fit my 1997 C3500 with a 7.4L?
Yes, the pump lists fitment for 1996 and 1997 C/K 3500 trucks with the 7.4L engine, but always double-check your truck's exact OEM part and connector before ordering.

Does it include the fuel level sending unit?
Yes, this assembly includes the electric sending unit so the fuel gauge function is preserved after replacement.

What warranty is provided?
The pump is covered by a one year 365-day unlimited mileage warranty and the seller offers direct support within 24 hours for warranty questions.