Any diesel mechanics out there that can tell me exactly what size bolt I need for a 2007 4HK1 fuel pump. It started leaking oil between the pump and bracket after I replaced the fuel leak off pipe. The pump is mounted with three bolts and the only one I can possibly reach, without tearing a bunch of stuff out to get at it, is missing. Not sure I'd get that lucky but hoping that if I get the right sized bolt it will stop the leak without having to tear it all apart.

Hoggin is the resident expert. I had a 2013, but traded it off when we believe we started having head gasket issues.

I’m no expert but I’m pretty it’ll be 8mm bolts 10mm head. You can call the dealer (truckworx/Kenworth) parts counter with the last 8 of the vin and get the correct bolt so that you don’t get one a mm to long and Jack something up

Thank you.