T4 Riser Block – GM 6.6L Duramax Without wastegate port 2 3/8 inch Height (116006058). An additional turbocharger riser block is required for larger bodied turbos (GT42R or larger).
Features:

• T4 Riser Block (Without Wastegate Port)
• 2.375 Inches tall
• No wastegate port
• Billet Steel
• Installation parts include (4 studs and 4 nuts)
• Sold As A Kit

Applications:

• GM 6.6L Duramax