Product Description
Diamond Eye 125040 – 4" First Section Passenger-Side Tail Pipe (08–10 Ford F-250/F-350 6.4L)
Restore proper routing and flow on your 6.4L Power Stroke with this Diamond Eye Performance Series 4-inch first-section passenger-side tail pipe. CNC mandrel bends, aluminized steel construction, and OE-style hanger geometry deliver a clean fit and long service life—perfect for replacement, system repairs, or upgrading from a crimped factory section.
Fitment
- Vehicle: 2008–2010 Ford F-250/F-350 Super Duty
- Engine: 6.4L Power Stroke
- Position: First section, passenger-side tail pipe (downpipe/DPF-back systems)
- Tubing Diameter: 4.0"
- Material/Series: Aluminized steel, Performance Series
- Cab/Bed: Fits all cab and bed lengths
Cross-Reference / Alternatives (Diamond Eye only)
- Stainless equivalent: DIAMOND EYE 165040
- Second section (pair it with this): DIAMOND EYE 221008
- 5" first section (Performance Series steel): DIAMOND EYE 125060
- 4" clamp to join sections: DIAMOND EYE 454000
- Matching 4" downpipe (race-use only): DIAMOND EYE 165102
Specifications
| Specifications for DIAMOND EYE 125040 | Details |
|---|---|
| Brand | Diamond Eye Performance |
| Part Number | 125040 |
| Tubing Size | 4.0 inches |
| Material / Finish | Aluminized steel / Performance Series |
| UPC | 841963112153 |
| GTIN (14) | 00841963112153 |
| Package Dimensions (L×W×H) | 26.40" × 19.90" × 8.80" |
| Shipping Method | Ground (oversize eligible) |
| Prop 65 | WARNING: Cancer & Reproductive Harm – www.P65Warnings.ca.gov |
Helpful Notes
- Use new clamps and verify hanger alignment during install.
- If pairing with other sections, confirm all joints are 4.0" and use anti-seize on slip fits.
FAQ
Will this fit all 2008–2010 F-250/F-350 cab and bed configurations?Yes—this first-section passenger-side tail pipe is designed to fit all cab/bed configurations for 6.4L Super Duty trucks in those years.
Is this aluminized or stainless?
This 125040 is aluminized steel (Performance Series). For stainless, use 165040.
Do I need additional parts to complete the repair?
We recommend a fresh 4" clamp like 454000 and checking the condition of the second section 221008.
Is this CARB compliant?
No. This component is not CARB exempt. Not for sale or use in California emissions-controlled vehicles.
