Borgeson-Steering-Box-Large:Small-Sector

Borgeson Large Sector Steering Box

Name: Borgeson Large Sector Steering Box
Brand: Borgeson
SKU: 5-0033
Price: 627.43 USD
Availability: InStock

$627.43

Finally, a true 14:1 power steering box with much better feel than OE boxes. This is the box only. To install it you also need a BAC fitting package and a direct-fit coupler.

Most customers order the complete Large Sector Conversion Kit (73-82), which includes the fittings and coupler.

Check fitment before you order

Body: A-body (Dart, Duster, Valiant), B-body (Charger, Road Runner, Coronet) or E-body (Challenger, Barracuda)
Model year and engine (small block, big block, 426 Hemi or Gen III Hemi)
Steering: manual or power, and what's on the car now

Returns: within 30 days, in saleable condition, return shipping prepaid by you. 20% restocking fee. Special-order items can't be returned. Full return policy

SKU: 5-0033 Category: Steering Parts

Bergman Auto Craft brings you one of the best Mopar upgrades of recent years: the Borgeson Large Sector Steering Box. Finally, a true 14:1 power steering box with razor-sharp response and precise feel, in a package that’s lighter than the original Chrysler box.

Why upgrade to this Large Sector Steering Box

Factory Mopar boxes are slow and vague, so the car wanders and needs constant correction. This box tightens everything up. The quick 14:1 ratio takes about 3.5 turns lock to lock, according to the manufacturer, and the steering stays centered and precise at speed. In addition, the box offers more exhaust clearance than the original.

Fitment and what you need

Large sector boxes were used on all C-bodies and on 1973 and later A, B, E, F, M and J vehicles. This box has a 1-1/4″ sector shaft, so it fits the matching factory pitman arm. If you’re not sure which one your car has, measure the sector shaft or give us a call.

Installation is a true bolt-in to the stock K-frame. However, the box uses metric ports and needs a coupler that fits the factory column. Therefore, you’ll also need:

A BAC pressure and return fitting package (62-68 or 69-72)
A BAC direct-fit coupling for your column
We also recommend our power steering oil cooler, since modern boxes run at higher pressure

Not sure if you need the large sector or the other style? Compare it with the Small Sector Steering Box.

Who is this box for? Anyone who drives their Mopar and wants it to feel modern. It’s equally at home in a restored street car, a pro touring build or an autocross car. Because it bolts to the stock K-frame and uses the factory pitman arm, the swap is also reversible. In addition, our team can help you pick the right coupler and fittings for your car.

Related: Steering Parts, more steering box products. For install and product videos, visit the Bergman Auto Craft YouTube channel.