Product Description
DIAMOND EYE QC400-3 is a universal 4.0" quick-connect coupler kit that includes 3 CNC-machined flanges and 1 V-band clamp so you can swap exhaust sections quickly without cutting or prying parts apart. Ideal for race-day tailpipe changes, service work, or modular exhaust setups.
FAQ: WHAT EXACTLY IS INCLUDED?
Three (3) precision 4" flanges and one (1) matching V-band clamp—everything needed to create a fast, repeatable connection on a single joint.
FAQ: WILL THIS FIT MY TRUCK?
It’s a universal 4" diameter kit. If your system uses 4" tubing at the joint you want to make quick-disconnect, the QC400-3 will work. Weld flanges to each mating tube and secure with the supplied V-band clamp.
FAQ: WHEN SHOULD I USE QC400-3 VS. QC400-6?
Use QC400-3 (3 flanges, 1 clamp) for a single connection—commonly at a tailpipe section. Choose the related QC400-6 (6 flanges, 2 clamps) when you need two quick-disconnect joints, like swapping a muffler for straight pipe.
Fitment Details
- Tubing Size: 4.0" OD exhaust systems (universal)
- Use Cases: Rapid tailpipe swaps for racing/competition, field service, modular exhaust layouts
- Installation: Weld-on flanges; align and secure with supplied V-band clamp
Cross Reference / Related Items
- QC400-6 — 4" kit with 6 flanges & 2 V-band clamps (two joints): View on CPP Diesel
- Manufacturer info page for Quick Connect Couplers: Diamond Eye Performance
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | QC400-3 |
| UPC | 841963120202 |
| GTIN | 0841963120202 (GTIN-12 / UPC-A) |
| Kit Contents | 3x 4" CNC-machined flanges, 1x 4" V-band clamp |
| Material | Steel (CNC-machined flanges) with V-band clamp |
| Configuration | Single quick-disconnect joint |
| Country of Origin | USA (per common retailer data) |
| Shipping Weight | ~1 lb |
| Package Dimensions | 3" W × 10" H × 10" D |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
