Will this fit on a 03 gmc envoy with the 4.2 in it?

Probably not, most likely you have to have the right length of tube and the rubber hoses to connect everything,I would type in the search 03 gmc envoy 4.2L coldair intake and see what comes up, hope that helps.

Fit a 2500dh 6.6 duramax?

Not for the diesel applications

Anybody know the k&n replacement filter number for 2003 silverado 5.3??

I know S&B filters KF-1000 & KF-1042 fits straight to MAF

I would like a second filter so when i clean one i can put the other in and go? where do i get one

I would definitely upgrade the filter, these ate cheap and aren't meant to be cleaned. If you measure the inlet hole you can find this filter for any brand.

ASIN	B082VH33Y4
Best Sellers Rank	#34,039 in Automotive ( See Top 100 in Automotive ) #48 in Automotive Replacement Air Intake Filters
Brand	MOOSUN
Brand Name	MOOSUN
Customer Reviews	4.4 out of 5 stars 1,890 Reviews
Fit Type	Vehicle Specific Fit
Fit type	Vehicle Specific Fit
Item Dimensions L x W x H	38L x 28W x 15H centimeters
Item Weight	7.89 Pounds
Manufacturer	MOOSUN
Manufacturer Part Number	MS-99-06-BB
Model Number	MS-99-06-BB
OEM Equivalent Part Number	MS-99-06-BB
OEM part number	MS-99-06-BB
Product Grade	Performance Part
Product dimensions	38L x 28W x 15H centimeters
Product grade	Performance Part
Shape	Oblong
UPC	303277078674
Unit Count	1 Count

MOOSUN 4 inch Cold Air Intake Black Tube + Heat Shield for 1999-2006 GMC/Chevy V8 4.8L/5.3L/6.0L Silverado 1500/2500/3500 Black

Details

Description

Specifications

Reviews

Common Questions