Moroso Chevy LS Exhaust Block Off Storage Plate - Pair - Black Ops Auto Works
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Moroso Chevy LS Exhaust Block Off Storage Plate - Pair

Moroso
MOR25157
084663251573
Block Off Plates
7 Units In Stock - Ships Next Business Day
$ 22.99
$ 22.99

SKU: 25157 | UPC: 084663251573

Moroso Chevy LS Exhaust Block Off Storage Plates - Pair (1997-2013 Cathedral Port Heads)

Moroso 25157 exhaust block off storage plates come as a pair to seal the exhaust ports on Chevy LS engines equipped with cathedral port cylinder heads. These plates protect against moisture, dirt, debris, and corrosion during off-season storage or transport. They provide a secure barrier for race engines and high-performance builds from 1997 to 2013.

Key Features

  • Cast Aluminum Build: Heavy-duty construction resists warping and handles repeated use without degrading.
  • O-Ring Seals: Viton O-rings create an airtight seal to fully block contaminants from entering ports.
  • Precision Machined: Exact fit for OEM cathedral port exhaust ports ensures easy alignment and secure mounting.
  • Mounting Hardware Included: Stainless steel bolts and washers provided for immediate installation.
  • Sold as Pair: Covers both cylinder banks for complete engine protection in one package.

Product Notes

  • Intended for storage only. remove plates before starting engine.
  • Clean exhaust ports thoroughly prior to installation for best seal.
  • Compact design fits easily in engine bays or storage crates.

Installation Notes

  • Professional installation recommended.
  • Uses factory exhaust manifold bolt holes and pattern.
  • Torque bolts to 18-22 ft-lbs using thread locker for secure hold.

This Part Fits

Year Make Model Submodel
1997-2004 Chevrolet Corvette Base, Z06
1998-2002 Chevrolet Camaro Z28, SS
1998-2002 Pontiac Firebird Formula, Trans Am
2004-2006 Pontiac GTO Base
2005-2007 Chevrolet Corvette Base
2005-2006 Chevrolet SSR Base
2006-2009 Chevrolet Trailblazer SS Base

Why Choose Moroso?

  • Trusted since 1958 for motorsports components.
  • Engineered with high-grade materials for lasting performance.
  • Exact tolerances from dedicated LS engine expertise.

Frequently Asked Questions

  • Q: Do these fit rectangular port heads like LS3?
    A: No, designed exclusively for cathedral port heads on LS1 LS2 LS6 engines.
  • Q: What material are the seals made from?
    A: Durable Viton O-rings provide chemical resistance and reliable sealing against moisture.
  • Q: Does installation require special tools?
    A: No, standard socket set works. hardware included and bolts to stock locations.

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective box 9 x 7 x 2 inches
  • Weight: 0.70 lbs

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