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Muncie M21 (451)
The system includes heavy-duty high-strength radius arms
2011 GMC Yukon XL 5
and out-perform every alternative
glow plugs and injectors are test fit
HSP Deluxe Max Air Flow Bundle For 2003-2004 GMC/Chevrolet 6.6L LB7 Duramax 1999-2007-sierra-1500 Muncie M21 (451)Looking for a kit that has it all? Featuring a mandrel bent 4 inch intake tube for massive airflow gains, HSP's signature heat shield box eliminating unwanted hot air entering the cold air intake. For every 1 degree increase in intake air temperature will result in a 3hp loss. This kit also features HSP's high flow turbo mouthpiece that outflows any ported mouthpiece on the market. It will also include HSP's hot side and cold side intercooler piping.
