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3" STAINLESS STEEL MUFFLER ONLY 2.5 STAINLESS STEEL MUFFLER 2.25 ALUMINIZE ALL WELDED MUFFLER
FLOW MASTER DESIGN REPLACES ALUMINIZE ONES
2.5 IN / 2.5 OUT OFFSET MUFFLER. OVAL,22" LENGHT BIDIRECTIONAL ALL STAINLESS STEEL 2.25 IN/ 2.25 OUT 18" LENGHT OFFSET OVAL ALUMINIZE ALL WELDED MUFFLER HEAVY DUTY
EXHAUST DOWN PIPE FOR STOCK MANIFOLD NO- WELD 02 SENSOR MOUNT Exhaust Heat Shields GMC Motorhome
NO- WELD 02 SENSOR MOUNT
Our Price: $49.98
EXHAUST DOWN PIPE FOR STANDARD EXHAUST MANIFOLD. MUST INDICATE 455 OR 403. ALSO INDICATE PASSENGER OR DRIVER SIDE. PRICE EACH NOT PAIR. Exhaust Heat Shields for Fuel Tanks


Here is a kit of items to shield the heat from the exhaust pipe to the fuel tank.The factory installed these shields to help minimize problems of overheating the fuel and vaptor lock.
The 20 gauge steel heat shielas are power coated white to minimize the heater transfer to the tank through absorption and re-radiation.these shields are like the original heat shield swhich had 3/8" bend on both sides, but I extended the upper bend, which installs over the exhaust pipe to 2" to provide additional heat isolation to the fuel tank.
MUFFLER  HEAT  SHIELD SPRING LOADED EXHAUST BOLT MUFFLER BEARING
MUFFLER HEAT SHIELD
Our Price: $39.95
MUFFLER HEAT SHIELD GMC MOTORHOME
Keep the pipes tight with these spring loaded exhaust
bolt.
Note: these are the bolts that hold the exhaust pipe to the exhaust manifold
TO REPLACE THE DETERIORATED HIGH TEMPERATURE RUBBER AND RETAINER CUP. STAINLESS STEEL PAINTED.
CLICK PICTURE FOR PRICE
Exhaust Mainfold Bolt Locks LOCKING HEADER BOLTS STAINLESS STEEL HEADERS ( NOT AVAILABLE)
LOCKING HEADER BOLTS
Our Price: $34.95
The original exhaust manifold bolts lock system for some reason completely ignores the center bolt. We have developed a bolt lock system that applies to the manifold bolts in exactly the same manner at the originals but has the added feature of providing a locking function to the center bolt.We believe that the use of our 5-bolt lock will provide a significant improvement to the longevity of the exhaust manifold gasket.

The lock plates are CNC machined from 18 gauge galvanized sheet steel, sold as a pair to do both exhaust manifolds, and are shipped with a tips sheet providing installation suggestions.
RESISTS VIBRATING LOOSE-- SUPER HARD CAM LOCKING WASHERS -- NO LITTLE CLIPS OR RETAINERS TO HANDLE---OIL ACTUALLY IMPROVES PERFORMANCE --- ECONOMICAL AND REUSABLE KIT INCLUDES 12 BOLTS 3/8 X 1"
ALL STAINLESS STEEL HEADERS COMES WITH REDUCERS BOLTS AND REMFLEX GASKETS. GOVERNOR IS ACCESSIBLE
Doug's Headers - High Temperature Coated Copper Exhaust Gasket  By Dave Lenzi Remflex HEADER  Gasket SOLD IN PAIRS
Designed SPECIFICALLY for the GMC MOTORHOME to produce Low End Torque. Comes with oxygen sensor ports.
Headers greatly reduce engine temperature by more efficiently drawing the exhaust gasses out. Lowering the temperature of the cylinder and the combustion chamber creates a denser fuel charge and therefor allows your engine to create more power.
HIGHLY RECOMEND REPLACING LOWER OIL DIP STICK TUBE

Ceramic coating is a high luster silver color that will not discolor with the introduction of heat and is more resistant to corrosion and heat at even higher temperatures. It creates a thermal barrier which lowers the understood temperature and adds life to your headers. The approximate dimensions of the package is 36hx20wx16L
Embosed Copper Exhaust Manifold Gasket
REMFLEX HEADER GASKET SOLD IN PAIRS
REMFLEX  EXHAUST MANIFOLD GASKET Thorley Header Gasket - GMC Motorhome EXHAUST BLOCK OFF PLATE W/ GASKET
STOCK EXHAUST MANIFOLD GASKET SOLD IN PAIRS
Thorley Header Gasket

GM12-030.1 SOLD IN PAIRS ONLY
WITH STAINLESS STEEL EXHAUST BLOCK OFF PLATES AND A SPECIAL GASKET TO WORK IN CONJUNCTION WITH THE PLATES
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Stainless Steel Mandrel Bent Exhaust System MUFFLERS BACK Aluminunized Mandrel Bent Exhaust System ALUMINUM HEADER GASKETS  ( REUSABLE )  ( PAIR )

*8 Year Warranty on All Parts

Style 1 and Style 2 :

Style 1 using 2 each magna flow mufflers and Style 2 using one CUSTOM STAINLESS STEEL FLOWMASTER DESIGN muffler at the rear. Stainless steel band clamps come with the stainless steel kit

2.5" and 3" Mandrel bent stainless steel pipes
CLICK PICTURE FOR PRICE

*8 Year Warranty on All Parts

Style 1 and Style 2:

Style 1 using two each Magna flow muffler and Style 2 using one each CUSTOM STAINLESS STEEL FLOWMASTER DESIGN MUFFLER at the rear with Non-band clamps

2.5" and 3" Mandrel bent aluminized steel pipes
CLICK PICTURE FOR PRICE

Installation Instructions
OPTIMUM SEAL FOR HEADERS--- FILLS GAPS IN DISTORTED/WARPED FLANGES ----MADE FROM DEAD SOFT ALUMINUM WILL NOT SHRINK,DETERIORATE OR BLOW OUT-- AND IT'S REUSABLE!!!!!
HEADER COLLECTOR KIT
HEADER COLLECTOR KIT
Our Price: $59.95
THESE ARE FOR THE DOUG HEADER WITH THE BONG FOR OXYGEN SENSOR. THIS IS NOT FOR THE OLD Thorley HEADERS. THE LONGER PIPE GOES TO THE DRIVERSIDE AND THE SHORTER ONE GOES TO THE PASSENGER SIDE.