

⚡ Power your legacy ride with precision & reliability!
The TOPSCOPE Fuel Pump is a direct OE replacement designed for Chevy Silverado and GMC Sierra trucks (1999-2004) with V6 and V8 engines ranging from 4.3L to 8.1L. Featuring durable metal construction, exact fitment, and quiet, efficient operation, it delivers reliable fuel pressure backed by a 1-year unlimited mileage warranty—offering professional-grade performance without the OEM price premium.






| ASIN | B014HB983M |
| Auto Part Position | Inside |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #14,590 in Automotive ( See Top 100 in Automotive ) #27 in Automotive Replacement Electric Fuel Pumps |
| Body Material | Metal |
| Brand | TOPSCOPE |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,660) |
| Date First Available | September 2, 2014 |
| Exterior | General Motor |
| Fit Type | Vehicle Specific Fit |
| Gas Type | Gasoline |
| Inlet Connection Size | 7.5 Inches |
| Inlet Connection Type | Threaded |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.6 pounds |
| Item dimensions L x W x H | 17.5 x 7.5 x 5.5 inches |
| Item model number | 5824073830 |
| Manufacturer | TOPSCOPE |
| Manufacturer Part Number | FP3500M |
| Material | Metal |
| Mounting Type | Tank Mount |
| OEM Part Number | ACDELCO MU1089, MU1207, MU1370, MU1516, MU1613, MU1757, MU86, AIRTEX E3500M, BOSCH 67305, 67450, CARTER P74835M, P76223M, DELPHI FG0053, FG0407, GM 19121626, 19153711, 19177272, 25176865, 25345026, 25348344, 88965373, PIERCE P1503M, P1538M, WALBRO TU432 |
| Operation Mode | Electric |
| Outlet Connection Size | 7.5 Inches |
| Outlet Connection Type | Barb or Flare or BSP or FNPT |
| Product Dimensions | 17.5 x 7.5 x 5.5 inches |
| Product Grade | New |
| Style | Electric |
| UPC | 601209651385 |
| Vehicle Service Type | Truck |
| Voltage | 12 Volts |
A**N
Direct-Fit Fuel Pump for Chevy Silverado – Reliable Replacement
This fuel pump fits Chevy Silverado models as advertised and installs without headache. The connectors and mounting points align properly, and the unit drops into place without forcing or modifications. Once installed, fuel delivery is steady and quiet, and the truck starts and runs smoothly without hesitation. Performance feels consistent and dependable, with no noticeable drop in power or efficiency compared to the OEM unit. The construction feels solid, and the pump runs cool with normal electrical load. If you’re replacing a worn or failing fuel pump on a Silverado and want a reliable, straightforward replacement without paying OEM prices, this unit does exactly that.
B**Y
Working as it should and very well constructed
I got this fuel pump a while back and just installed it a few days ago and it's definitely doing it's job I didn't have to change the electrical connector it was already the right one, it seems like a great product a very well constructed, couldn't really tell the difference between my old fuel pump and this new one I'd recommend this to anyone that would like to save a few bucks
J**.
It works!
Update: pump started to fail after three years. It was starting hard and missing on acceleration. I bought this pump again because it’s definitely worth the money. I’m very glad I cut the hatch in the bed. Installed the new pump in 15 minutes and it runs strong again. Works perfectly in my 2002, 4.3L, 4x4, regular cab, Silverado with stepside bed. Rusty bolts made me decide to not lift the bed or drop the tank. I got a jigsaw and cut a hatch door in the floor of the bed, above the pump. I measured from below. I soldered the new wiring harness first and wires were obvious. Purple to purple, thick black to thick black, gray to gray, orange/black to thin black. Lock ring came off after a few minutes and some penetrating oil. Truck runs smoother than before. Shop wanted $700+, I did it for $60. I’ll update if it fails.
L**Y
Seems to work as it should
So far so good.. I Purchased on June 8th, 2025 and got it the next day. I’ve only had it installed for 6 days so far.. Installing went smoothly once I removed bed.. (removed bed completely to do some rust removal and sealing) truck started up 1st try after install. Only thing I don’t like is having to cut harness to use updated plug. No wiring instructions.. hopefully it will last years to come. I will update review later to let people know about longevity..
M**S
great for the price
I put this pump in 6 months ago and it is running perfectly still and my truck cranks every time now... it is worth the money
D**.
Included gasket did not fit my 1999 GMC Sierra SLE
I was very satisfied with the construction and operation of this fuel pump. Instructions were complete, assembly of the float was straightforward and as advertised. The pump is installed and works fine (about a month now). Unfortunately, the included gasket didn't fit my 1999 GMC Sierra SLE. The gasket is too thick overall (both the lip and the body). It certainly appears to be very well constructed and durable but one size does not fit all. Fortunately, my original gasket was in really good condition and I was able to reuse it and complete the installation. I would recommend this product to others.
C**O
perfect fit
fit perfect fired right up no issues
A**H
Sent plastic parts of the impeller through my fuel system.
Showed up a day early and Worked great for 2 weeks then sent plastic parts of the impeller through my fuel system costing me new fuel lines filter fuel rail and 8 injectors..
D**A
Fits and works great
ا**د
ممتاز
G**R
Arrived early,fit as it should and works great
A**C
installation facile environ 1heure
M**R
Didn't fit!
Trustpilot
2 days ago
3 weeks ago