3/4″ (-12) DSM Turbo Oil Drain Kit- Holset, BW, PTE


Large Diameter 3/4″ (-12 equivalent) oil drain kit for journal bearing turbos that require ample oil flow. Since our first (non bolt-on) turbo swap, we’ve been salvaging OEM Holset drain lines to make a true 3/4″ drain line. And while AN fittings and lines work, we’ve always preferred a simple clamped hose with fittings that are much closer to an actual 3/4″ ID than a comparable AN fitting. Not being able to find many options out there, we sent some flange files to be cut and made a mini bead roller in order to make our own refined kit. Allows future turbo removal by sliding the hose off instead of dealing with gaskets. We hope it makes things as easy for you as it has for us!

A little overkill for ball bearing turbos but works just as well so we use it on everything it bolts up to. We now offer a 5/8″ oil drain kit which we would recommend for most ball bearing turbos, with the ability to also fit Xona and Garrett turbos.

*Turbo drain flange not compatible or intended for MHI bolt-on turbos. 2″ center to center turbo drain flange for most non bolt-on turbos. For a Mitsubishi MHI/bolt-on oil drain, please see our MHI oil drain line kit.

**Top mount configurations have an extra charge for the additional material/welds

Out of stock


The turbo fitting has been slightly angled towards the pan fitting, giving it a more direct route while also allowing it to better clear the 1g front motor mount bracket for most standard placement/bottom mount turbo combinations- especially helpful for turbos with longer center section lengths such as Borg Warner, Holset, and PTE. The oil pan fitting is also angled up slightly to promote more oil drainage out of the line.

Heat sleeve/shielding is recommended near any exhaust components. For 1g/2g/GVR4/Evo1-3 with standard location turbo setups. Top mount oil drain kits available upon request.


-3/4″ stainless turbo drain fitting, angled away from compressor cover and towards the oil pan fitting
-3/4″ stainless fitting that bolts to the factory DSM oil pan, angled up for better drainage
-12″ of 3/4″ high temp oil resistant push on hose (cut to length by user, usually between 9 and 10″)
-Two stainless oil pan bolts with self sealing o-rings under the bolt heads
-Two stainless turbo bolts
-Three stainless hose clamps
* Does not include gaskets
*Not compatible/intended for MHI bolt-on turbos with a 38mm/1.5″ center to center turbo drain flange

Top mount configurations are $139 for the additional material/welds

After receiving the completed worksheet below, we will email an invoice over and ship within 1-2 business days after payment.

If you are interested in purchasing over five (5), we will contact you directly after submission of the form.


3/4″ (-12) DSM Turbo Oil Drain Kit- Holset, BW, PTE