Upper Intake Y-Bridge Seal, Duramax LML | 2011 - 2016

This upper intake Y-bridge seal, GM part number 12627913, seals the upper joint of the intake Y-bridge on 2011-2016 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD trucks with the 6.6L LML Duramax. The Y-bridge splits incoming boost air to both sides of the intake manifold, and this seal keeps that joint airtight under boost. A hardened or pinched seal causes boost leaks, low power, a whistle under load and extra smoke. Always replace it any time the Y-bridge, EGR or intake is taken apart.

Key Features

• GM part number 12627913
• Seals the upper Y-bridge joint on the LML intake
• Factory size and fit
• Direct replacement, no modification needed
• Individually bagged and labeled by Merchant Automotive

Benefits

A fresh seal keeps boost where it belongs, so you get full power back after intake or EGR work and don't chase leaks later. While the Y-bridge is off, replace the EGR to Y-Bridge Gasket too. If you are upgrading, see the High Flow Y-Bridge Kit for the LML.

Fitment

Fits 2011-2016 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD with the 6.6L LML Duramax diesel.

What's Included

• (1) Upper intake Y-bridge seal, GM 12627913