I DID MY LPOP PREVENTITIVLY. 340K ON MY ENGINE AND IT WAS TAKING A MOMENT FOR THE PRESSURE GAUGE TO COME UP ON START UP. GETTING WORSE WITH WINTER SETTING IN, SO I FIGURED IT IS TIME. I WAS ALSO GETTING SOME OIL AIRATION NOT BAD NOT FOAMING BUT JUST SOME MICRO AIR BUBBLES. THE MELLING PUMP IS A SMALLER PUMP THAN OEM, BUT PUMPS MORE VOLUME FOR SURE!! SAYS RITE ON THE BOX MADE IN USA. THIS LITTLE GUY MADE A MASSIVE IMPROVEMENT ON HOW MY ENGINE RUNS. IMMEDIATLY ON START UP I NOTICED IT IDLES MUCH SMOOTHER, AND MUCH QUIETER. ITS 1/3 QUIETER AT IDLE, OIL PSI COMES UP RIGHT AWAY ON COLD START, RUNS SOO MUCH BETTER THROUGH THE ENTIRE RPM BAND. BASED ON HOW WELL THIS ONE IS DOING, I COME TO THE CONCLUSION MY OLD PUMP WAS LEGIT FAILING...I ALSO DID THE FLUIDAMPER DAMPER LISTED ON THIS WEBSITE PER CLAY'S RECCOMENDATION AT THE SAME TIME. FLUIDAMPER AND THE MELLING LPOP IS A WINNING PAIR FOR SURE. I WAS BLOWN AWAY HOW MUCH BETTER THIS THING IS. NOT AIRATING OIL ANYMORE
---ALSO, I WAS HAVING AN ONGOING ISSUE WITH INJECTORS NOT FIRING CORRECTLY AT OPERATING TEMP AND UNDER LOAD. IT WOULD ALMOST FEEL LIKE A MISS/ WEAK FIRE OF THE INJECTORS. CHASED MY TAIL WITH INJECTOR O-RINGS, HARNESSES, BALANCE TESTS WITH NO SUCSESS. PROBLEM SOLVED, INJECTORS FIRING CORRECTLY NOW UNDER LOAD.

Fixed my startup hesitation!

I got my melling lpop from riffraff super fast, like lighting quick. Product was as described and packaged very well. Good communication from riffraff on shipping. Pump installed easily in about an hour. Thank you riffraff for excellent service, superior products, and fast shipping.

Great kit. Fair price. Easy to install. Actually made my 7.3 quieter. Very happy with the product and service form Riffraff.

This oil pump seems beefier than the OEM part

Works as it should.

Great part and upgrade , very pleased with the quality

Went in easy, immediate improvement. Order a new wear ring if lots of miles on the motor.

I've used melling pumps before very good product so when my 7.3 failed choice was easy.riffraff diesel very easy to work delivered as promised