Dayco Heater Hose | Heater Inlet | 01-04 GM 2500HD/3500 6.6L Duramax LB7 DS-WW35 you must add a fooler

you must add a fooler to avoid check engine lights if your programmer/chip does not deal with this

All necessary hardware is included for a hassle-free installation

LESS RESTRICTION

The Rebound SLX keeps the sharp lines

Dayco Heater Hose | Heater Inlet | 01-04 GM 2500HD/3500 6.6L Duramax LB7 DS-WW35 you must add a foolerDayco cooling system hoses feature knitted reinforcement, a synthetic EPDM rubber construction for high strength performance, protection against abrasion, and resistance to oil, mud, salt, road debris, ozone and coolants. They can also withstand temperature variations from 40F ( 40C) to +257F (+125C). The inner base is reinforced with knitted rayon for maximum strength and burst resistance. In addition to meeting SAE J20R4, Class D 1 requirements,