Seller notes

Brand New Supertech Performance Block Guard for : Nissan Sentra SER & Spec V - QR25, QR25DE Engines Supertech Part # BG-QR25DESupertech Block Guards are meticulously designed and tested in many engines. As a result we offer a product that will provide support to highly stressed cylinder walls with optimal engine cooling by allowing enough water flow in critical areas to avoid destructive cylinder hot spots.Made from high strength, high corrosion resistant 6061 Aluminum Alloy, computer designed a...

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