In PTE terms, there is no specific part number for each model turbo.
There are only two part numbers. Direct from the price sheet on their website they are as follows. The one for standard spring actuator (
081-1005) and one for heavy duty spring actuator (
081-1007). When you order either one of these actuators from one of PTEs vendors, or direct from PTE for that matter, you must specify what compressor cover your turbo has as they only have the correct bracket and orientation layouts for 4 compressor covers.
For all the newbies out there, here are pictures of the 4 types of covers that PTE has actuators for that will have the brackets spot welded in the proper orientation.
TA compressor cover (used on all stock 86-87 TRs and 89 TTAs as well as all of the current upgraded TA series turbos such as the TA-49, TA-60 etc, etc.) 3" inlet with billet inlet bell, 2" discharge.
TE compressor cover, also called the TO4E style comp cover. 3" inlet, 2" discharge. This pictures shows what the PTE casted E cover looks like.
TO4S compressor cover, also called the S comp cover. 4" inlet, 2.5" discharge. This is the turbo that requires the special cnc cut aluminum bracket from PTE in order to get the proper WG orientation. If you buy the turbo with the actuator, it includes the bracket and will be installed when you open the box. If you purchase the actuator seperately, it should have the bracket and the special flush headed black bolt. Not sure if it will include the washer that is needed in place of one of the clamps. See Royal-T-Ltds pics above.
H compressor cover. This is the large race series compressor cover that comes on all of PTEs 70 series turbos. 4" inlet, 3" discharge.
H cover with Ported Shroud option.
Hope this helps.
Patrick