Product Description
Diamond Eye 162002 Turbo Downpipe — First Section with O2 Bung (3" In/Out)
Free up backpressure and improve turbo response on your OBS 7.3L with Diamond Eye’s mandrel-bent 3" first-section downpipe. This piece replaces the restrictive OEM first section directly off the turbo and includes an oxygen sensor bung for factory compatibility. Built for daily use and towing, it’s a straightforward upgrade that pairs perfectly with the matching second section or a full Diamond Eye system.
Fitment
- 1994–1997.5 Ford F-250 / F-350 Super Duty, 7.3L Power Stroke (all cab/bed configurations)
- Direct-fit first section from turbo, 3.0" inlet / 3.0" outlet
- Includes oxygen sensor bung
- Material: Aluminized steel (Diamond Eye Performance Series)
Why Upgrade?
- Reduces exhaust restriction vs. stock crushed pipe
- Helps lower EGTs and improves spool-up
- Mandrel bends for smooth flow and durable fitment
Cross-Reference / Alternatives (Diamond Eye only)
- DIAMOND EYE 162003 — Second Section with O2 Bung (pairs with this first section)
- DIAMOND EYE 122003 — Second Section, No O2 Bung (aluminized)
- DIAMOND EYE 162004 — Stainless Version (3" Downpipe)
What’s Included
- Diamond Eye 162002 3" first-section turbo downpipe with O2 bung
- Installation instructions (basic)
- Hardware as supplied by manufacturer
Helpful Notes
- This is the first section only. Pair with the correct second section to complete the downpipe run.
- Stainless option available (see 162004) if you prefer maximum corrosion resistance.
Specifications
| Specifications for DIAMOND EYE 162002 | |
|---|---|
| Brand | Diamond Eye Performance |
| Part Number | 162002 |
| Material | Aluminized steel (Performance Series) |
| Inlet / Outlet | 3.0" / 3.0" |
| Section | First section (from turbo) |
| Oxygen Sensor Bung | Included |
| UPC | 841963112795 |
| GTIN | 00841963112795 |
| Shipping Weight | ~4.0 lb |
| Package Dimensions | Approx. 26" L × 9" H × 6" W |
| Shipping Method | Ground (standard) |
| Country of Origin | U.S.A. (manufacturer) |
| Prop 65 | WARNING: This product can expose you to chemicals including nickel and chromium, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. |
Frequently Asked Questions
Will this fit my 1994–1997.5 F-250/F-350 7.3L without other mods?Yes—this is a direct replacement first-section downpipe for the OBS 7.3L platform. Pair it with the proper second section (162003 or 122003) to complete the run.
What’s the difference between 162002 and 162004?
162002 is the aluminized-steel Performance Series version; 162004 is the stainless-steel version of the 3" downpipe for the same fitment.
Does it include an oxygen sensor bung?
Yes, the bung is included and positioned for factory compatibility on 1994–1997.5 applications.
Can I run this with a stock or aftermarket exhaust?
Yes. It’s designed to replace the restrictive first section off the turbo and can be paired with stock or Diamond Eye second sections and systems.
