Description
Fits: AEM 21-9021 LB7 and 21-9022 LLY GM 6.6L diesel intake systems with the specified 5-435 reducer; matching installed AEM kit required.
This exact service reducer joins the two tube diameters used by the documented AEM Duramax intake kits. AEM currently specifies EPDM rubber; the listing does not repeat generic retailer silicone wording.
Product details
- Reduces a 4-inch tube connection to 3.5 inches; 3-inch length.
- Current manufacturer material: black EPDM rubber.
- One adapter per package; 90-day manufacturer warranty. Clamps are not listed in the package.
What is included
One exact AEM coupler/reducer only. The intake kit, filter, tubes and mounting hardware are not included.
Installation and service
Match the installed kit number and hose dimensions before service. Refit the specified clamps and inspect all joints for a secure, leak-free seal. This catalog entry validates the named intake service location only; it does not assert a charge-air/boost-hose rating.
Application and emissions notes
Replacement/service part only. Match the installed AEM kit number and retain its required adapters, sensors and emissions equipment. This part is not an intake conversion and does not grant emissions approval to any installation; local restrictions still apply.
