zzperformance

Update June 2021: We are proud to announce our new and improved modified steel retainers. These retainers have the weight of titanium but the stren...

NA applications: This should be used when adding boost to your naturally aspirated engine or when your boost levels are above your factory MAP sens...

This is sold so you can slide it into our 4" intake tubing and then slide a 4" inlet air filter onto the other side. OD is 4.01”ID is 3.75”Thicknes...

The stock reverse lights are 32 candlepower leaving you with a difficult time seeing at night when you have tinted windows. These 40 candlepower po...

These genuine Bosch 42# "Green Giant" injectors are a direct fit for upgrading your 97-03 3800. They have an EV1 connector and come with new inject...

4t65e 2nd Clutch Piston for 4t65e transmission

3rd clutch piston for the 4t65e transmission.

This is our aluminum version of the stock 4T65E transmission pan. It will cool the transmission fluid in a safe way that doesn't require modifying ...

Bushing kit for the 4T65E transmission.

ZZPerformance was the first to break a pump shaft and we are proud to be the first to do something about it. Since we have learned that transmissio...

4T65E "high energy" coast band for the 4T65E/4T60 transmission.

4T65E "high energy" forward band for the 4T65E transmission.

Input clutch piston for the 4t65e transmission

4T65E input speed sensor for the 4T65E transmission.

The base kit comes with all the gaskets, seals, and o-rings needed to rebuild your 4T65E. The "Model" drop down will add more items to build a mor...

Replacement Reverse Band for the 4T65E Transmission

Our transmission shift kit speeds up the shifting of any 4T65E. It works on the standard non HD and HD versions of the transmission and can be inst...

We recommend you change your transmission filter every 60k miles at least. This will make sure that the filter itself does not hinder your transmis...

OEM ACDelco replacement

Transmission Case Side Cover Gasket Kit for the 4t65e transmission

This is a universal barbed oil drain flange. For use in a DIY turbo system or replacement for our 3800 or LSJ turbo kits.

The ZZP 50mm Blow Off Valve (of BOV) kit includes a high-quality billet aluminum blow off valve, weld-on flange(if selected), v-band clamp, and fit...

Did you lose or damage your 50mm blow off valve o-ring gasket? This is a replacement for the ZZP or TiAl 50mm blow off valve.

These tensioner/idler pulleys will allow use of an 8 rib belt. All pulleys are 3" in diameter. Full set includes : (1) smooth tensioner pulley ...