DIESELSITE Wicked Wheel® 2 for the Garrett GTP38R ball bearing or "D66" version turbos - WW38R

Need help deciding which wheel to purchase? The D66 model will have better bottom end, quicker spool,...

Part Number: WW38R

Vendor: Dieselsite
Availability: Many In Stock
Product Type: Turbocharger Accessories
Please hurry! Only 0 left in stock
Subtotal: $259.00
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Return Policy

Within 21 Days

California Residents:
Prop 65 Warning:
Cancer and Reproductive Harm

Need help deciding which wheel to purchase?

The D66 model will have better bottom end, quicker spool, and lower EGTs towing.
The 38R model will produce more peak hp.
If you have stock injectors, or have larger hybrids with tuning to pull back power- the D66 model will be better.
If max power is important and you have larger injectors - the 38R model will be better.
If you have an aftermarket "D66" style turbo with an un-ported compressor cover - the D66 model is a perfect choice.


Special Note: This turbo has a standard right hand thread - meaning you turn the compressor wheel to the left to loosen. No need to torque the Wicked Wheel on. Simply snug the Wicked Wheel until it fully seats. It will self-tighten to full torque. The Wicked Wheel is balanced at the factory. Turbo balancing after installation is not necessary.

Before pulling off the compressor cover: The compressor cover can rotate 360 degrees. To eliminate you having to find the right index again after re-assembly, using a marker, mark a line across the break in the separation joint in the cover in two different spots. When you re-assemble the housing, you simply line up your old lines and you will save yourself a lot of time.

Below is a dyno graph taken at Power Hungry Performance on Jason's truck. This truck has 250/200 injectors, GTP38R, and PHP tuning. Results are with only a wheel change. No tuning has been done to try to take advantage of the new found air volume. 

Brand: Dieselsite
Manufacturer Part Number: WW38R
Length (in): 6.0
Width (in): 6.0
Height (in): 6.0
Weight (lbs): 1.0

Returns Policy

You may return most new, unopened items within 21 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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