Free Shipping on orders over $199 - Continental U.S. only. Restrictions apply.
PSC

PSC SG859R Big Bore XD Cylinder Assist Steering Gear Box (Without Adaptive Steering)

SKU: PSCSG859R

$1,495.00

🔔 Important Notice: This product may be temporarily out of stock. Orders are still accepted, but additional processing time may be required before shipping. Contact us to confirm current availability.

Usually ready in 24 hours
Free Shipping on Orders Over $199
Expert Support — Call or Text Anytime

The PSC SG859R Big Bore XD Cylinder Assist Steering Gear Box will replace the worn-out gearbox in your RAM 4500/5500 with 6.7L Diesel Engine. This all-new steering box has no core charge and has been ported, tuned, and balanced by PSC to deliver unmatched performance.

Features:

  • No Core Charge
  • 100 Percent Brand New
  • Direct-Fit Replacement
  • PSC Ported, Balanced, & Tuned Valving

📌 Before You Complete Your Purchase — please review the important information below regarding product accuracy, pricing, inventory, and return policies.

Terms & Conditions

While we strive for accuracy, FrankBUILT Performance does not warrant that product descriptions, prices, or other content is error-free. Prices are subject to change without notice. In the event of an error, we reserve the right to cancel or correct any order. Inventory availability is not guaranteed.

Shipping & Returns

It is the customer's responsibility to verify product fitment before placing an order. If you receive the wrong item due to an error in our listing, we will work to resolve the issue. Returns may be subject to a restocking fee. Items must be unused and in original packaging.

2-Year Warranty

FrankBUILT transmissions only - unlimited miles

Free Shipping $199+

Continental U.S., restrictions apply

Transmissions Built In-House

Every build assembled by our team

Expert Support

Team ready to help