KC Turbine Housing - .84 or 1.0 A/R - 99-03 7.3 Powerstroke

The KC Turbine Housing is a drop-in wastegated turbine housing upgrade for the 1999-2003 7.3 Powerstroke Super Duty - available in 1.0 A/R (high flow, reduced back pressure) or .84 A/R (faster spool, towing and smaller injector builds). Both versions bolt directly onto the stock turbo with no modifications and are designed to reduce back pressure, improve exhaust flow, and run more efficiently than the factory housing.

The KC Turbine Housing fits 1999-2003 Ford Super Duty trucks equipped with the 7.3 Powerstroke, bolts onto the stock turbo without modification, and ships without warranty coverage as a DIY product.

KC Turbine Housing - Which A/R Is Right for Your 7.3?

The .84 A/R and 1.0 A/R versions are both a significant upgrade over the factory housing, but they serve different goals on the 1999-2003 7.3 Powerstroke. The 1.0 A/R is the high-flow option - it reduces exhaust back pressure and allows more exhaust volume through the turbine housing at higher engine loads, making it the stronger choice for trucks running larger injectors or builds prioritizing top-end flow. The .84 A/R tightens the housing scroll, which increases exhaust gas velocity at the turbine wheel and improves spool speed and throttle response - the right pick for stock or smaller injector trucks and tow rigs where low-end response matters most.

Choose the 1.0 A/R for high flow and back pressure reduction. Choose the .84 A/R for faster spool, improved driving manners, and towing response. If your injectors are stock or mild and the truck pulls weight, the .84 A/R is the correct part to order.

Confirm your injector size and primary use case, then select the correct A/R above.

What the KC Turbine Housing Adds to Your 7.3

The KC Turbine Housing is a wastegated, high-flow replacement for the factory 7.3 Powerstroke turbine housing on 1999-2003 Super Duty trucks. The wastegate allows boost pressure to be managed more precisely than a non-gated housing, and the reduced back pressure design lets the engine breathe out more efficiently under load.

Both A/R options are built as direct bolt-on replacements for the stock turbo - no machining, no adapter, no core return. The housing drops into the existing turbo location, uses the stock turbo compressor wheel and center section, and is designed to run more efficiently than the factory unit. For tow rigs and stock-to-mild builds, the combination of faster spool and reduced back pressure translates to a truck that responds more crisply and may run lower EGTs under load.

What Comes in the Box

Each KC Turbine Housing ships as a single housing ready to mount to the stock turbo.

• KC Turbine Housing (your choice of 1.0 A/R or .84 A/R)
• Wastegate integrated into housing

Verify whether your installation requires additional gaskets or hardware before ordering - the source does not confirm gaskets are included with this housing.

Fitment Coverage - 99-03 Super Duty 7.3 Powerstroke

Fits 1999-2003 Ford F-250, F-350, and F-450 Super Duty trucks equipped with the 7.3 Powerstroke diesel. Bolts directly to the stock turbo in this application.

• 1999 Ford F-250 / F-350 Super Duty 7.3 Powerstroke
• 2000 Ford F-250 / F-350 Super Duty 7.3 Powerstroke
• 2001 Ford F-250 / F-350 Super Duty 7.3 Powerstroke
• 2002 Ford F-250 / F-350 Super Duty 7.3 Powerstroke
• 2003 Ford F-250 / F-350 Super Duty 7.3 Powerstroke

This housing does not fit the 1994-1998 OBS 7.3 Powerstroke - that platform uses a different turbine housing bolt pattern and A/R configuration.

Avoid These Common Mistakes

• Wrong platform: The 1994-1998 OBS 7.3 uses a different turbo setup. This housing is for 1999-2003 Super Duty only.
• Choosing the wrong A/R for your build: Tow rigs and stock-to-mild injector trucks get the most from the .84 A/R. If you are running larger injectors and prioritize top-end flow, the 1.0 A/R is the better fit.
• Assuming warranty coverage: No warranty is included. Confirm before ordering if warranty coverage is a hard requirement.
• Assuming gaskets are included: Gasket inclusion is not confirmed for this housing - verify before install.

Before You Order - Final Check

• 1999-2003 Super Duty 7.3 Powerstroke confirmed - not a 1994-1998 OBS
• A/R selected: 1.0 for high flow, .84 for faster spool and towing response
• No warranty requirement - DIY product only
• Ship-to address is outside California and Colorado
• Gasket sourcing confirmed for your install

For a 1999-2003 7.3 Powerstroke Super Duty owner looking to reduce back pressure and wake up throttle response, this is the correct bolt-on turbine housing upgrade - select your A/R, confirm the checks above, and add it to your build.

Frequently Asked Questions