New Design Now Shipping!

Gain up to 10 rear-wheel horsepower with an SLP high-flow air-box lid. This bolt-on unit eliminates the restrictive stock baffles and resonator assembly, significantly improving air flow to the throttle body. Use our high-performance air filter (Part #25012) for up to 5 additional horsepower. NEW! All lids are now hot-stamped with a contrasting white SLP logo.

Optional Reusable Air Filter

Add either an optional SLP Blackwing or K&N Air Filter for only $57.95, which includes the additional cost of shipping the filter! You can view the details on these filters HERE.

SLP PT# 21044 - High Flow Airbox Lid - 1998-99 LS1 F-Body

Author: art coleman

Date:  Saturday 6th December 2008

I ORDERED THIS MONDAY AFTERNOON 12/01/08 AND RECEIVED IT THURSDAY 12/04/08. THANX FOR THE CHEAP FAST SHIPPING...BY THE WAY THE LID REALLY MAKES A DIFFERENCE FOR 90 DOLLARS. I RECOMMEND ANYBODY WHO DOESN'T HAVE ONE NEEDS TO GET ONE.

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Author: brian broznowicz

Date:  Tuesday 31st March 2009

From various sources I knew this product would be a good buy, but I was very pleased with the service and speed of delivery of the product. I received the item within 5 days of ordering, packaged well, and as described. I comparison shop ad infinitum and marylandspeed.com was my first and last choice for the headers that i just purchased today. No one could touch the prices and shipping for either of these products. Thank you and keep up the good work.

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