Product Description
DIAMOND EYE 529021 is a 4.0" T409 stainless steel, CNC mandrel-bent 90° L-bend elbow for custom exhaust fabrication. It’s universal for 4" O.D. systems and built for long service life in high-heat diesel applications.
FAQ: WILL IT FIT MY SETUP?
Yes, if you’re running a universal 4" exhaust system or building custom 4" tubing, this elbow integrates as a 90° corner section. Measure twice to confirm leg length and routing clearance.
FAQ: WHAT MATERIAL IS IT?
T409 stainless steel—great corrosion resistance and durability vs. aluminized, ideal for daily-driven trucks and work rigs.
FAQ: WHAT ELSE DO I NEED?
Pair with a quality 4" band clamp for leak-free joints and easy serviceability. See compatible Diamond Eye clamps below.
Fitment Details
- Type: Universal 4" O.D. exhaust systems (diesel & gas)
- Use Case: Fabricate clean 90° turns in turbo-back/cat-back sections, stacks, and custom routing
- Material: T409 stainless steel, mandrel-bent
Cross-Reference / Complementary Diamond Eye Items (CPP Diesel)
- DIAMOND EYE 529020 — 4" 90° L Bend, Aluminized
- DIAMOND EYE 524521 — 4" 45° Elbow, Stainless
- DIAMOND EYE BC400S430 — 4" Torca Band Clamp, 430 Bright Stainless
- DIAMOND EYE BC400A — 4" Torca Band Clamp, Aluminized
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | 529021 |
| Material | T409 Stainless Steel |
| Diameter | 4" O.D. |
| Bend Style | 90° L Bend, mandrel-bent |
| UPC | 841963118308 |
| GTIN | 00841963118308 (GTIN-14) |
| Warranty | 6 Year Defect |
| Shipping Weight | ~5.0 lb |
| Ship Dimensions | 26" L × 9" W × 9" H |
| Prop 65 | WARNING: Cancer & Reproductive Harm — www.P65Warnings.ca.gov |
