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SKU: K5314A | UPC: 841963110401
Diamond Eye 5" Turbo-Back Exhaust System (Aluminized Steel) - 1994-1997 Ford F-250/F-350 7.3L Powerstroke
The Diamond Eye K5314A 5" turbo-back exhaust system for the 1994-1997 OBS Ford 7.3L Powerstroke provides maximum flow and reduced backpressure with mandrel-bent aluminized steel tubing, a high-flow muffler, and full 5" downpipe. Designed as a complete turbo-back replacement, this system delivers a deep aggressive tone, lower EGTs, improved throttle response, and increased towing performance while meeting CARB-equivalent standards for off-road and older vehicle use.
Key Features
- 5" Mandrel-Bent Aluminized Tubing: Full 5" diameter from turbo to tip for unrestricted flow.
- Turbo-Back Design: Includes 5" downpipe with high-flow catalytic converter replacement pipe.
- High-Flow Muffler: Straight-through perforated core muffler for deep tone without drone.
- Polished Stainless Tip: 6" rolled-angle tip with Diamond Eye logo.
- Power Gains: Up to +30 hp / +65 lb-ft and reduced EGTs (dyno-tested).
- Bolt-On Installation: Uses factory hangers – no welding required.
- Aluminized Steel Construction: Corrosion-resistant with long-term durability.
- Made in USA: Manufactured by Diamond Eye Performance.
Product Notes
- Complete turbo-back system downpipe, intermediate pipe, muffler, tailpipe, tip, clamps, and hangers.
- Part number: K5314A (aluminized steel version).
- Fits all 1994-1997 F-250/F-350 7.3L Powerstroke (OBS body) – 2WD & 4WD, all cabs/beds.
- Off-road / race use – CARB equivalent standards (not CARB EO certified for street use in California).
- Weight savings approximately 25-30 lbs vs. factory exhaust.
- Limited lifetime warranty on tubing, 1-year on muffler.
Installation Notes
- Direct bolt-on no cutting required on most models.
- Professional installation recommended for downpipe alignment.
- Typical install time 3-5 hours.
This Part Fits
| Year | Make | Model | Engine |
|---|---|---|---|
| 1994-1997 | Ford | F-250 | 7.3L Powerstroke |
| 1994-1997 | Ford | F-350 | 7.3L Powerstroke |
Why Choose Diamond Eye?
- Specialists in OBS Ford 7.3L Powerstroke exhaust systems.
- 5" turbo-back kits proven for towing, performance, and sound.
- American-made with lifetime warranty on tubing.
Frequently Asked Questions
-
Q: Is this CARB legal?
A: No, off-road/race use only (CARB equivalent standards but not EO certified). -
Q: Does it include a catalytic converter?
A: No, off-road downpipe replaces factory cat. -
Q: How loud is it?
A: Deep aggressive tone louder than stock with moderate drone at cruise.
Shipping & Handling
- Method: Freight truck (long box).
- Package Weight: Approximately 75–85 lbs.
- Box Dimensions (approx): 62" × 18" × 14".
Diamond Eye Performance
Diamond Eye Performance manufactures mandrel-bent exhaust systems and components for diesel trucks, with a catalog that spans DPF-back, turbo-back, and cat-back exhaust for Cummins, Duramax, and Power Stroke platforms. CNC mandrel bending maintains full internal tube diameter through bends from 3/8-inch to 5-inch OD in both aluminized and stainless steel, ensuring exhaust gas flow is not restricted by collapsed bends common in lesser exhaust systems.Popular UpgradesDiamond Eye 4-inch DPF-back exhaust systems for the Cummins 6.7L and Duramax 6.6L diesel trucks are the most popular products, providing a meaningful reduction in exhaust restriction over the factory 3.5-inch outlet section. Stainless steel mandrel-bent kits are available for the Ram 2500, Ram 3500, Ford Super Duty, and GM HD truck platforms with direct-fit connections and tip options. Aluminized exhaust kits offer the same mandrel-bent quality at a lower price point for builds in drier climates where corrosion is less of...
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