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Thumbnail Filmstrip of 7.3 OBS Powerstroke 4 Inch Aluminized Exhaust Diamond Eye K4306A-RP Images
Diamond Eye K4306A-RP 4" Aluminized Turbo-Back Exhaust System
Upgrade your OBS 7.3L Powerstroke with the Diamond Eye K4306A-RP 4-inch aluminized turbo-back exhaust. This mandrel-bent system replaces the restrictive factory exhaust from the turbo back, delivering stronger flow, lower EGTs, improved throttle response, and added horsepower and torque while producing a deep, aggressive diesel tone.
Key Features
- 4-inch mandrel-bent aluminized steel tubing for maximum exhaust flow and durability
- Includes 3-inch two-piece downpipe for easier fitment in the OBS engine bay
- Muffler-replacement pipe (no muffler) for unrestricted flow and a more aggressive sound
- Reuses the factory catalytic converter
- Direct bolt-on design that utilizes OEM hangers
- Fits all cab and bed lengths
- Tip not included
- CARB EO D-778
Benefits
- Reduced backpressure and lower exhaust gas temperatures
- Increased horsepower, torque, and throttle response
- Potential fuel economy improvement under load
- Straightforward installation (typically under two hours for experienced DIYers)
Fitment: 1994–1997.5 Ford F-250 / F-350 7.3L Powerstroke (all cab & bed configurations). Not intended for F-450 cab & chassis models.
Notes: Aluminized construction is ideal for dry climates. Tip is sold separately. This is a muffler-delete style system (K4306A-RP).
Diamond Eye K4306A-RP 4" Aluminized Turbo-Back Exhaust System
Upgrade your OBS 7.3L Powerstroke with the Diamond Eye K4306A-RP 4-inch aluminized turbo-back exhaust. This mandrel-bent system replaces the restrictive factory exhaust from the turbo back, delivering stronger flow, lower EGTs, improved throttle response, and added horsepower and torque while producing a deep, aggressive diesel tone.
Key Features
4-inch mandrel-bent aluminized steel tubing for maximum exhaust flow and durability
Includes 3-inch two-piece downpipe for easier fitment in the OBS engine bay
Muffler-replacement pipe (no muffler) for unrestricted flow and a more aggressive sound
Reuses the factory catalytic converter
Direct bolt-on design that utilizes OEM hangers
Fits all cab and bed lengths
Tip not included
CARB EO D-778
Benefits
Reduced backpressure and lower exhaust gas temperatures
Increased horsepower, torque, and throttle response
Potential fuel economy improvement under load
Straightforward installation (typically under two hours for experienced DIYers)
Fit[...]
Diamond Eye K4306A-RP 4" Aluminized Turbo-Back Exhaust System
Upgrade your OBS 7.3L Powerstroke with the Diamond Eye K4306A-RP 4-inch aluminized turbo-back exhaust. This mandrel-bent system replaces the restrictive factory exhaust from the turbo back, delivering stronger flow, lower EGTs, improved throttle response, and added horsepower and torque while producing a deep, aggressive diesel tone.
Key Features
- 4-inch mandrel-bent aluminized steel tubing for maximum exhaust flow and durability
- Includes 3-inch two-piece downpipe for easier fitment in the OBS engine bay
- Muffler-replacement pipe (no muffler) for unrestricted flow and a more aggressive sound
- Reuses the factory catalytic converter
- Direct bolt-on design that utilizes OEM hangers
- Fits all cab and bed lengths
- Tip not included
- CARB EO D-778
Benefits
- Reduced backpressure and lower exhaust gas temperatures
- Increased horsepower, torque, and throttle response
- Potential fuel economy improvement under load
- Straightforward installation (typically under two hours for experienced DIYers)
Fitment: 1994–1997.5 Ford F-250 / F-350 7.3L Powerstroke (all cab & bed configurations). Not intended for F-450 cab & chassis models.
Notes: Aluminized construction is ideal for dry climates. Tip is sold separately. This is a muffler-delete style system (K4306A-RP).
Q
Aj • 02/21/2025, 2:50:06 AM
Will this fit on a crew cab long bed?
A
02/24/2025, 4:01:48 PM
Yes
Q
Adam • 03/27/2025, 0:36:52 AM
Does this come with A CATALYTIC converter?
A
03/28/2025, 1:34:49 PM
No. You use the factory unit.
Q
William Bogrett • 04/21/2025, 4:25:55 AM
Is this 4" from the turbo back or does it use a 3" downpipe
A
04/22/2025, 4:52:05 PM
4 Inch Downpipes do not fit the OBS Ford. This is a 3 Inch Downpipe
Proposition 65 Warning Information -
P65Warnings.ca.gov