Pypes manifold downpipes replace the restrictive factory intermediate pipes on 1965-70 Chevrolet Impala models with small block engines. The pair bolts directly onto the factory cast iron exhaust manifolds using a 3-bolt flange and routes the exhaust into a 2.5 inch mandrel bent path for improved flow. Each pipe is built from 16 gauge 409 stainless steel for long service life and includes the hardware needed to install. These downpipes connect the manifolds to the intermediate or crossover pipe and are a direct fit replacement for the stock configuration.
- Type: Manifold Downpipes
- Material: 409 stainless steel, natural finish
- Diameter: 2.5 in
- Construction: 16 gauge, mandrel bent
- Fits: Factory cast iron manifolds, 3-bolt flange
- Includes: Mounting hardware
- Sold as: Pair
- Part Number: DGU18S
Vehicle Applications
- 1965 Chevrolet Impala (Small Block)
- 1966 Chevrolet Impala (Small Block)
- 1967 Chevrolet Impala (Small Block)
- 1968 Chevrolet Impala (Small Block)
- 1969 Chevrolet Impala (Small Block)
- 1970 Chevrolet Impala (Small Block)
FAQ
What vehicles do the Pypes DGU18S downpipes fit?
They fit 1965 through 1970 Chevrolet Impala models with small block engines and factory 3-bolt cast iron exhaust manifolds.
What are these downpipes made from?
They are built from 16 gauge 409 stainless steel with a natural finish and are mandrel bent for smooth flow.
Do they bolt to the factory manifolds?
Yes. They use a 3-bolt flange that bolts directly onto the factory cast iron manifolds, and mounting hardware is included.
Are they sold individually or as a pair?
The DGU18S downpipes are sold as a pair, covering both the driver and passenger sides.
