Trans Connection
1288 W. San Marcos Blvd.
San Marcos, CA 92078
(760) 471-2450

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Trans Connection - Volume Transmission Hard Parts Rebuilder

Catering to volume transmission rebuilders who know the value of consistent quality parts

When you need parts - come to the source!


Some of the Parts We Manufacture

TH180C TH180C

We have done hundreds of these for the U.S. post office and other production rebuilders. This pump is sleeved and cut back to standard. The pump will look just as good in your hands.

TH350 TH350

Not very high tech, but we sell a lot of them. We sent a sample to a customer; he asked where we had them cast. I was happy to tell him they were just machined.

A4LD A4LD

By holding factory tolerances we are able to maintain factory volume and pressure to give you what you need to keep your unit on the road.

4L80 Pump 4L80 Pump

We machine only genuine GM pumps. We are competitive with the imports and there are no issues with pump whine or leaking associated with the imports.

BA pumps BA Pumps

We modify all BA pumps to high volume AA design. We rebuild the AA pumps back to standard, or build them to accept the new Sonnax high volume gears. We did the first prototypes of this gear for Sonnax.

A140 A540 Overdrive Cover A140 A540 Overdrive Cover

At last an affordable alternative to Toyota Factory parts. This part looks and specs out identical to brand new.

part24rr.jpg (15252 bytes) RL4 Half Case

Mirror finish, less likely to score, tolerance .001 - .003, no machine tool marks.

700R4 Pump Body 700R4 Pump Body

Fixtured to eliminate warpage we consistently hold .001 - .003 clearance.

AXOD Pump

AXOD Pump Cover AXOD Pump

Machined back to factory specifications. No need to buy a whole valve body. Also available: AX4N, 4T60, 4T40, 3T60, and 440T4 pumps.

TH180 Planetary TH180 Planetary

We have developed a nitch over time in the TH180 pumps.

E40P Center Support Update E40P Center Support Update

A reliable low cost alternative.

RL4 Maxima Planetary RL4 Maxima Planetary

Stanza can be converted to Maxima; the splines are replaced as needed.

A340 Pump A340 Pump

I was surprised to discover that the factory here is not centered to the drum. This explains why so many turn up bad during overhaul.

Please Contact Ray at (760) 471-2450 or email him at Ray@AllianceTransmissions.com to find out how to get your hard parts rebuilt at an affordable price.