Product Specifications
Catless 1.8T Downpipe for 1997–2005 Audi A4 B5/B6 and 1998–2005 VW Passat B5/B5.5
Replace the turbo exhaust section of a listed Audi A4 or Volkswagen Passat 1.8T with this Flashark catless downpipe. Its mandrel-bent stainless-steel tube provides a smoother, less restrictive exhaust path from the turbocharger. It has two integrated oxygen-sensor bungs for compatible sensors where applicable.
Specifications
| Specification | Details |
|---|---|
| Brand | Flashark |
| SKU | FLES08343 |
| Product type | Catless turbo downpipe |
| Material | T-304 stainless steel |
| Finish | Mirror polished |
| Inlet size | 2.5 inches |
| Outlet size | 3 inches |
| Oxygen-sensor ports | Two integrated bungs |
| Catalytic converter | None; catless design |
| Construction | Mandrel-bent tubing, TIG-welded joints and CNC-machined flanges |
Key Features
- Catless turbo downpipe: Replaces the listed turbo exhaust section without a catalytic converter in the pipe, removing the catalytic restriction from this section.
- Mandrel-bent tube: Provides the smoother exhaust path described for this product.
- Two oxygen-sensor bungs: Allow compatible vehicle sensors to be transferred where applicable.
- TIG-welded joints: Support the stated strength and durability of the pipe's connections.
- CNC-machined flanges: Provide the product's bolted connection points; compare both ends with the original pipe.
- Polished stainless-steel construction: Combines the listed T-304 material with a mirror-polished finish.
- Installation gaskets and hardware: Supplied as shown to support installation after connection compatibility is checked.
After installation, exhaust and turbo sound may be louder, and exhaust odor may be stronger. An emissions-related check-engine light may occur depending on the vehicle's oxygen-sensor system and calibration. Actual performance depends on engine and turbo condition, calibration, and the rest of the exhaust system; no fixed horsepower, torque or fuel-economy increase is guaranteed.
What Is Included
- One catless downpipe
- Two exhaust gaskets
- Installation bolts, springs, washers and nuts as shown in the package image
Check Before Ordering
- For listed 1.8T four-cylinder configurations only. It does not fit the 2005.5 Audi A4 B7 or 2.0T, V6, 3.0L, W8, TDI and other engine configurations.
- Compare the original pipe's turbo-side flange pattern, outlet flange and diameter, oxygen-sensor locations, routing and surrounding clearance with the product before ordering. Drivetrain, transmission and existing aftermarket exhaust parts can affect alignment. For an Audi A4 Quattro, contact Flashark with the VIN and vehicle specifications to confirm the connections.
- Oxygen sensors and a tuner are not included. Transfer compatible sensors or source them separately where applicable; some original hardware may need to be reused. Review the package image before installation.
- Professional installation is recommended. Inspect mating surfaces and check for exhaust leaks after the first complete heat cycle.
- This pipe has no catalytic converter and is not intended as an emissions-compliant catalytic-converter replacement. It may affect inspection eligibility, exhaust odor, oxygen-sensor readings and check-engine-light operation. Confirm applicable local, state and federal rules before purchase and installation; use only where legally permitted.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
