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Discussion Starter #1
Ok does anyone know the cummins part number for the 1st injector line on the 4BT . Mine does not have the P Pump. I think mine is the Bosch.pump.
& Also if you know the O-Ring part number AT the injectors . Mine is leaking from when I bleed my lines.
THANKS
 

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Papitt, which Bosch injection pump do you have and which engine configuration? I have a list of many of those injection lines but need to know which pump. Is it a VE rotary type pump? If so, does it have the aftercooler? If it's an inline pump and not the P model then it would be an A pump. On those there were several configurations, non turbo, turbo, and turbo with aftercooler. If you happen to have the engine serial # I possibly can check it that way.
 

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Discussion Starter #3
BOSCH VE pump & no after cooler. .. I'M GOING TO TRY & SEE If I can read the motor number in the morning . I GOT HOME TO LATE THIS EVENING .
 

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The standard VE pump setup would be like CPL858. The #1 injection line part # is 3903480. In case you should ever need them the other three are 3903481, 3903482, and 3903483. It's quite possible those lines are the exact same ones used on the 6bt models. If you find a serial # I'll double check to be sure your engine doesn't have something odd.
 

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Discussion Starter #5
YES Char .. I believe those are the correct number .. I had one of the parts guys look them up for me . I work at a truck parts & repair shop . But at 70+ I'm just a delivery boy now. They like for me to quite. But I'M dependable & I'll work 10hr O.T. A WEEK while the kids are no shows & don't want 30 hr a week. I've been there for 12 years . Kids don't last but maybe 6 months. But I make 5buck an hour more than the kids .. & The boss thinks I should work for 10.00 per hour. I love what I do & Our customers like myself.
But When he told me what those lines cost from Cummins . do you know if there are any aftermarket brands . This parts guy gave me the numbers & told me to look on line . & I will . But I sure don't want to pay 75.00 each. I really need no.1 & no.3...
Thanks ..
 

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There are some aftermarket suppliers but haven't looked. Yes, somewhere in the $70 range is about normal. The reason I suggest you check the serial # is you have it is Cummins used 2 different size injector nuts depending on CPL. The CPL858 had the 9mm tips and the injector body had a larger threaded fitting where the line attached. When they changed to 7mm tips on other CPL's, the threaded part was smaller. I won't swear for sure, but those injector lines may be the same as the first gen Dodge. You can also find them from Case tractors. The 3903480 translates to Case part J903480 which Coleman Equipment sells for $59.80. That's a little better than $75. Here's a link to a company that sells them for $57.07. https://shop.moderngroup.com/3903480-tube-fuel-supply/?gclid=EAIaIQobChMI6cuR8-Xa5QIVx0XVCh132gQlEAYYASABEgKICPD_BwE Here's another one that sells it for $51.54. https://www.minnpar.com/product.asp?PartNbr=3903480&StockNbr=J903480&ProductCode=997100 And yet another for $49.20. https://www.radwell.com/en-US/Buy/UPTIME PARTS/UPTIME PARTS/3903480/ Heck, if I keep looking you might get them for free. LOL. I did find one listing for $16.99 but that was 2 years ago. I see they are available front China for $5.78-19.99. Sure is one heck of a markup on those isn't it. Here's the line to Alibaba https://syleiman.en.alibaba.com/product/62254241087-803984535/cummins_diesel_engine_Parts_Injector_Fuel_Supply_Tube_3903480_3903481_3903482_3903483.html
 
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