FASSNo reviews yet
FASS Titanium Signature Series
Constant fuel pressure, real filtration, and the single best reliability upgrade on a common-rail Cummins.
2 flow rate options
$724.00
DetailsLift pump and filtration system · 100 or 165 GPH
2016 RAM 2500 · 6.7L Cummins · 68RFE
600 HP tow rig that still behaves in traffic
A truck that had already been tuned, and was starting to show why the supporting parts matter.
- Owner
- Daniel R. · Kissimmee, FL
- Time in the shop
- Two visits over three weeks — fuel and cooling first, driveline second
- Parts documented
- 5 · $2,911 at list
The goal
Pull a 14,000 lb fifth wheel across Florida every month without watching the temperature gauge the whole way.
Daniel came in running a tuner on an otherwise stock driveline. The complaint was converter temperature on long grades and a fuel pressure gauge that dropped under load. We did not touch the tune. We fixed what the tune exposed.
What came in
- Rail pressure sagging under sustained load on the factory lift pump
- Converter-out temperature climbing past 220°F on grades
- Original 68RFE internals at 184,000 miles with no service history
- Fuel filter overdue with visible contamination in the housing
What left
- FASS Titanium 165 holding steady pressure at the CP3, confirmed on a road log
- Transmission temperature stabilized with the auxiliary cooler and deeper sump
- Valve body recalibrated for towing so apply pressure holds under load
- Full service baseline established with intervals tracked on the account
What we measured after
- Rail pressure under load
- Held within spec on logged pull
- Trans temp on grade
- Down from 220°F+ to 185–195°F
- Service baseline
- All intervals reset and tracked
They did not sell me more power. They sold me the parts that made the power I already had stop hurting the truck.
Parts used in this build
Every component is linked with its real price. The set comes to $2,911 at list — add the ones your truck actually needs.
Browse the catalog
Sunstate DieselNo reviews yet
68RFE Built Valve Body
The single most effective 68RFE upgrade — firmer shifts, less slip, and fluid where it needs to be.
2 calibration options
$1,299.00
Details2007.5–2018 · Bench-tested, performance calibrated
MishimotoNo reviews yet
Mishimoto Transmission Cooler
Drops converter-out temperature on a towing truck — the single most effective way to make a 68RFE last.
2 application options
$529.95
DetailsStacked-plate cooler · 68RFE and later automatics
Sunstate DieselNo reviews yet
Deep Transmission Pan
More fluid capacity, a drain plug, and cooling fins cast into the floor of the pan.
$269.00
Details68RFE / 48RE · Cast aluminum · +2 quarts
MoparNo reviews yet
Transmission Filter Kit
Both filters and the pan gasket for a complete 68RFE service — no reusing old gaskets.
$89.00
Details68RFE · Pan filter, spin-on, and gasket
Want this done to your truck? We will quote the install with parts and labor as one line item each, and tell you what to do first if you want to stage it.
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Photos taken during the work.
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Tell us the truck. We will tell you what it needs.
Call, email, or stop by the shop on North Orange Blossom Trail. Bring the VIN if you have it — we can confirm fitment on the spot and have the right parts ready.
Workshop and pickup7800 North Orange Blossom Trail
Orlando, FL 32810EmailSunstatediesel@gmail.com
Orlando, FL 32810EmailSunstatediesel@gmail.com
HoursMonday – Friday8:00 AM – 6:00 PMSaturday9:00 AM – 2:00 PMSundayClosed