1999 Powerstroke KC300x G3 Stage 2 Turbo E99 (302677)

The KC Turbos 302677 KC300x G3 Stage 2 is a 100% drop-in replacement turbocharger for your 1999 (E99) 7.3L Powerstroke. KC's third-generation redesign pairs a 7x7 SXE style compressor wheel and a thick-shaft SXE style turbine wheel with a reworked 0.91 A/R turbine housing — it spools faster than the old 0.84 A/R and flows more air than the old 1.0 A/R, so the housing choice the previous generation required is gone.

The internals were redesigned around durability: 200% larger thrust and journal bearings, a thicker turbine shaft to carry them, a cast-iron-backed bearing housing to cut deflection at speed, and a steel thrust insert reinforcing the oil slinger and piston seal contact areas.

Supports: Up to 238cc/80% injectors

Part Number: 302677

• 100% drop-in turbo (no modifications required)
• Dyno proven power gains
• Redesigned Gen 3 7x7 SXE style compressor wheel with upgraded aero
• Thick shaft Gen 3 SXE style turbine wheel
• Redesigned quick spool 0.70 A/R ported compressor cover
• Improved MAP groove, anti-surge ring, and volute shape
• Redesigned 0.91 A/R turbine housing with upgraded volute technology for quicker spool & more top end power
• Spools faster than the old 0.84 A/R and flows more air than the old 1.0 A/R due to this radical redesign
• 200% larger thrust and journal bearings
• Thicker turbine shaft to accommodate larger bearings and higher boost and HP levels. Stock shaft sizes can deflect and result in catastrophic failures
• Redesigned bearing housing with integrated cast iron backing plate for improved high speed stability by reducing deflection
• Added steel thrust insert to reinforce oil slinger and piston seal contact areas & eliminate bearing fatigue
• High flow non-EBPV outlet flange
• Redesigned round-top wastegate actuator for increased boost control
• Comes with all gaskets and o-rings to install
• Comes with newly upgraded 3.5" intake boot with better fitment over previous designs

• This is the early 1999 (E99) turbocharger. Late 1999 through 2003 (L99-03) trucks take a different part — contact us if you are unsure which your truck is.
• KC Turbos highly recommends adding these products for the best results:
  • Upgrading your up-pipes
  • Upgrading EBPV pedestal
  • Running a Hydra programming chip
• These turbos come standard finish unless specifically requested. You can add a polished or custom colour cover for an additional fee.
• Powder coating can take up to 3 weeks before it ships.
• No guarantee of fitment with all variations of aftermarket parts like fuel systems, plenums, piping kits, etc.
• EXHAUST BRAKES: Do exhaust brakes work with KC turbos? KC Turbos has found that some brands have clearance issues and might cause the brake to hinder performance, rub the turbine wheel, or cause other issues. These brakes typically use some sort of flapper to close which causes extreme exhaust back pressure to aid in braking. This can be hard on a turbo and motor and is not recommended. It will be up to the customer to verify fitment and functionality.
• KC turbos are designed to fit directly in 7.3 equipped pick-up trucks. Although KC turbos can drop into 7.3 equipped vans, you will need to modify the turbo intake boot and down-pipe for proper fitment.
• All KC Turbos are assembled and built in the United States.

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