126k

Dropped in a Walbro 255 from racetronix, and at 167k made 477whp

Walbro ftw

 

Just passed 370K on mine. Still quiet and lights right off, even cold. I think the saving grace for it was the fact it was my dad's courier truck for the first 211K of its life, and it never ran for long on empty.

 

'02 Suburban 'Z" Flex Fuel 5.3 - 178K miles. Started dying, hard to start about 2 months, finally bit the dust. Put in a Aitrex from the TwiliteZone. Not a difficult job. Original did last 16 years. Not too shabby.

 

Damn. Thats a lot of miles on a pump.

I replaced mine a few months back with a 255 in anticipation of a tvs1900. Still waiting for the blower thing to come through.

 

dang, i hate playing that game!!

went with a tvs2300 instead of a 1900 on my LS1 in prep for a 402... 7yrs later, i'm planning some eventual top-end work to the LS1 i'm still using

put 4.30s in my truck in prep for a medium cam... truck's finally planning to get dropped off in 2 weeks for a btr stage 3 - 2.5yrs later

 

Lol it happens. I needed a new fuel pump either way.

 

My 05 is original with over 200000 miles and it starts quicker than my 2017 6 liter hd does with 18000 miles on it. I'm already getting extended cranks on the 17 when it sits lol.

 

I would say it depends on how you use your truck. Heat is the killer of fuel pumps. so if you refill your tank at 1/4 to help keep it cool, it should last longer. However if you run your tank until your 5 miles from walking, I think that will kill a pump faster.

Definitely replace with a high quality pump. Delphi if you're going stock, Walbro for mods. Stay away from the Airtex. They always fail right after the warranty is up and changing them out is entirely too hard to be swapping them like axle oil.

 

My truck was run on fumes before I would refill. got 215(ish)K miles out of it. it still worked fine, but having to prime it multiple times to avoid an embarrassing hard start got old. I know it's harder on the pump, and I don't condone it, but that's my experience. did it with every vehicle I've ever owned and I've never had a pump leave me stranded.

 

Do you change your fuel filters regularly? I feel good fuel filter maintenance will also help pump health.
I purchased my suburban and nursed the weak pump for a few years. Sometimes it was hard to start and other times it would die on the interstate. We would coast to the nearest off ramp, take a break, get out, stretch, do jumping jacks, play tag for about 10 minutes for the pump to cool and then get in and drive. Only once did I have to change the fuel filter at a rest stop to get us home. The stock pump had just become weak over time.

I think you got lucky to get your pump to last over 200k. That's some longevity!