SKU: DACO-01-19
Allison CAT Filter Conversion Kit

FITMENT: 2001-2019 Chevy/GMC Allison 1000 Equipped Trucks

KIT INCLUDES: Adapter, O-ring, 077-3492 filter, and Instructions

 

The Ultimate Oil Filtration for your Allison 1000 Transmission is here!  After

field testing and 3rd party lab testing, we are proud to bring the MDDP CAT

Allison Adapter to the market! At MDDP we like to create products that are

heavy duty, overbuilt, precise, and able to handle the toughest

environments. This was why we wanted to get the CAT 077-3492

Hydraulic/transmission Oil Filter on the Allison!

 

Keeping clean fluid through your clutch, torque converter, and valve body is

the lifeblood of your transmission. Keeping the grit and abrasive material in

the filter and out of the transmission fluid. The CAT filter we chose and

tested for this kit is designed for the harshest environments and to filter

large amounts of oil at a high rate of flow between long service intervals in

the field. The CAT 077-3492 is designed for far more flow and pressure than

an Allison Transmission is able to produce. Allowing it to easily outperform

the OEM and competition. TESTED IS AN UNDERSTATEMENT.

We wanted to know how the CAT filter would catch transmission fluid

contamination versus the OEM Allision Filter. The 3 rd party lab test

introduced 30 micron (average transmission debris size) particulates at 1.3

GPM, upstream from the filter. The fluid downstream from the filter was

analyzed to see how much particulate above 30 microns made it past the

filter. 39 minutes into the test, the OEM filter was allowing 55% of particles

above 30 microns through the filter and back into the transmission. At 77.5

minutes, the CAT filter still allowing 0 particles above 30 microns past the

filter.

A filter needs to be able to hold the debris it collects over the service life of

the filter. We wanted to know exactly how many grams of debris each filter

could hold before it gave up and opened the bypass, sending unfiltered fluid

back into the transmission. The OEM Allison filter held 4.1 grams of grit and

the CAT filter held 17.7 grams of grit. Proving a 430% increase in holding

capacity.

We wanted to know the exact difference in flow restriction between the CAT

filter with its adapter, vs OEM. With a better filtration rating comes the

question, how well can it still flow oil? This is where the massive amount of

filtering media inside the CAT filters gets to shine. When tested at 1.3 GPM

at 35 kPa, The CAT filter with the adapter flowed 188% more efficient than

the OEM Allison Filter.

A hydrostatic burst test was performed at 200+PSI in a very frigid

environment. Both the adapter, filters, and oil sat in -30 degrees Celsius for

5 hours before the test. At the worst conditions possible with oil being

thick/viscus, and rubber seals wanting to shrink, we wanted to know the

adapter’s O-Ring and filter’s O-Rings would stay sealed. The Allison filter

held to 246 PSI. The CAT Filter / Adapter held till 258 PSI, proving a better,

strong seal. After testing different rubber compounds and their durability,

we chose a very strong, resilient, O-ring for the adapter to transmission seal.