Straightflow Metal Catalytic Converter Substrate E4 D90/100L 200cpsi

Description

The Straightflow E4 90mm Cat Core is a 200 CPSI metallic catalytic converter substrate (cat core), 90mm in diameter and 100mm long, for catalytic converter rebuilding and custom exhaust fabrication.

Straightflow E4 90mm Cat Core Details

• Type: metallic catalytic converter substrate
• Diameter: 90mm (Straightflow spec)
• Length: 100mm (Straightflow spec)
• Cell density: 200 CPSI (Straightflow spec)
• Structure: metallic honeycomb foil (Straightflow spec)
• Emission standard: E4 compatible when properly coated (Straightflow spec)
• Supplier code: SFT-17335 (Straightflow CE4 90/100)
• Make: Straightflow
• Fitment: universal

What Straightflow states

Straightflow says the substrate is made to be welded into an existing catalytic converter housing or muffler. The metallic honeycomb foil resists vibration, thermal shock and high exhaust temperatures, heats up faster than ceramic for better cold-start emission efficiency, and the 200 CPSI density balances surface area for coating with exhaust flow.

Straightflow says it supports E4 emission compliance only when properly coated with platinum, palladium and rhodium, and that professional welding and the right catalytic coating are needed for full emission function. It is listed for catalytic converter rebuilding, custom fabrication and emission system restoration.

Fitment

This is a universal part, so there is no car list. Check the internal diameter and length of your housing (this core is 90mm x 100mm) before ordering the Straightflow E4 90mm Cat Core.

Straightflow says this substrate needs professional welding and the right catalytic coating to work as a catalytic converter, so plan the job with your installer. If you are asking us about the Straightflow E4 90mm Cat Core, quote the supplier code so we can match the exact item.

Related Straightflow parts

See also: Straightflow Metal Catalytic converter substrate E5 D90/100L 200cpsi, Straightflow Metal Catalytic Converter Substrate E4 D95/100L 200cpsi, Straightflow Metal Catalytic converter substrate E5 D95/100L 200cpsi.

Confirm exact vehicles on the Fitments tab before ordering.