
MAHLE G31914 Intake Tube Seal (Snout at Y-Bridge) (2006-2010 6.6L Duramax)
Fits: Chevrolet • GMC
Diesel Dollars is Southern Diesel Supply's Loyalty Program. Purchasing with Us Earns you 1 Point for every 1 Dollar spent to use for future buys!
By ordering the MAHLE G31914 Intake Tube Seal (Snout at Y-Bridge) (2006-2010 6.6L Duramax) you will earn 3 DIESEL DOLLARS in your SDS Fuel Tank!
The MAHLE G31914 Intake Tube Seal (Snout at Y-Bridge) reseals the intake tube where its snout meets the Y-bridge on the 2006-2010 6.6L Duramax LBZ and LMM in Chevrolet Silverado and GMC Sierra 2500HD-3500HD trucks. It is an OE style replacement made to factory specifications. It is sold individually, and the engine takes two.
Fitment
Fits the 6.6L Duramax LBZ (2006-2007) and LMM (2007.5-2010) in 2006-2010 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD trucks. It is a direct-fit seal for the intake tube snout at the Y-bridge on those engines. The listing does not cover the earlier LB7 and LLY or the later LML and L5P. If you are not sure which engine is in your truck, verify by VIN or call us. More parts for these engines are in our Duramax section.
Why this part
Any time the intake tube comes off the Y-bridge, the seal at the snout is what closes that joint back up. The G31914 is MAHLE's OE style replacement for it, made to factory specifications, so it fits the factory joint the way the original seal did with no modification. If you are resealing the intake tube on an LBZ or LMM, this is the piece that goes back in. Two O-rings are required per engine and MAHLE sells them one at a time, so order two and do the job in one pass.
What you get
One MAHLE G31914 intake tube seal (O-ring). MAHLE lists these features:
- Sold Individually
- Direct-Fit Installation
- OE Style Replacement
Installation notes
Note: Two O-rings required per engine. Each G31914 is sold individually, so set your quantity to two if you are resealing the intake tube completely.
About MAHLE
MAHLE started in 1920 as a small engine shop in Stuttgart, Germany, and made its name on pistons. Today it builds pistons, rings, bearings, valves and a wide range of gaskets and seals for engine builders and the aftermarket. We carry its sealing parts for Duramax, Cummins and Powerstroke trucks.
Frequently asked questions
How many of these do I need?
Two. The engine requires two O-rings, and the G31914 is sold individually, so order a quantity of two.
Will it fit my 2011 or newer Duramax?
This listing covers the 2006-2010 LBZ and LMM only. For an LML or L5P, look for the seal listed for your engine or call us with your VIN.
Is it the same as the factory seal?
It is an OE style replacement made to factory specifications and installs as a direct fit in place of the original.
Questions on fitment? Call the shop at the number in the header. We install everything we sell.
Diesel Dollars is Southern Diesel Supply's Loyalty Program. Purchasing with Us Earns you 1 Point for every 1 Dollar spent to use for future buys!
By ordering the MAHLE G31914 Intake Tube Seal (Snout at Y-Bridge) (2006-2010 6.6L Duramax) you will earn 3 DIESEL DOLLARS in your SDS Fuel Tank!


