VALVE COVER GASKET 

or ROCKER BOX COVER GASKET - Silicone

fits

LYCOMING Engines 235, 290, 320, 360, 540

See complete engine list below.

-   Our silicone rubber gaskets are made from aerospace mechanical 

      grade AMS silicone and designed to withstand temperatures 

      up to 400 degrees Fahrenheit.   

-   Therefore, they will not break down and deform or crack up 

      like cork or neoprene.   

-   Our gaskets seal uneven and warped surfaces, and

      eliminate corrosion.

-   Gaskets are 100% reusable.

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FAA-PMA approved for the engines listed below

FITS:      LYCOMING

                  O-235;   O-290;   

                  O-320;  IO-320;

                  AIO-320-B, -C;   

                  LIO-320-B, -C;   

                  AEIO-320-E1B, -E2B;

                 O-360;   IO-360;   

                 HO-360,-B1A, -B1B, -C1A;   HIO-360;  

                  IVO-360-A1A;   

                 LO-360;    LIO-360-B1G6;    

                 TO, LTO-360 76 Series;   

                 AEIO-360-B1B,  B1F,  B1G6, B1H,  H1A, H1B;

                O-540;   IO-540;   

                AEIO-540-D Series;

                TIO-540, -AF1A, -AF1B, -AG1A, -AK1A, -AA1AD, -AB1AD,

                -C1A, -E1A, -G1A, -H1A Series

FAA-PMA approved

Part #:   RG-75906-SP

Corresponding part #’s:  75906 and 06B26669

6 Bolt hole Gasket

Silicone gasket is 1/8" thick

Price is per gasket

Reusable

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THE GASKET SURFACES MUST BE CLEAN AND DRY - remove all traces of oil.

INSTALLATION AND MAINTENANCE PROCEDURE

1.        Remove the valve cover and gasket in accordance with the Lycoming procedure 

           or in accordance with an acceptable procedure used by the shop performing 

           the installation.

2.        Clean the valve cover and the cylinder surfaces of all residual material.

3.        Install P/N RG-75906-SP,  DRY.

4.       Replace the valve cover and torque the cover bolts to 25 in-lbs.

5.       Check the cover bolt torque after an engine run-up  to take off power

          or first flight and re-torque the bolts to 20 in-lbs.

6       Check the cover bolt torque annually, and re-torque to 20 in-lbs, if necessary. 

Be sure to follow the torque instructions on the label.

**CAUTION**   DO NOT OVERTIGHTEN.    

It makes the gasket bulge or squeeze out.

TO REUSE GASKET:   

1.    Wash gaskets briefly in hot water and soap.   
2.    Rinse well and dry thoroughly.   
3.    Re-install gasket using the above installation instructions.

Keep instructions for future reference.

PROUDLY MADE IN THE USA!

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Use cork?    Get REAL!    REAL Gaskets that is…

REAL Gaskets Tennessee is a manufacturer of silicone rubber gaskets 

for aircraft, automobile, and motorcycle engines.

Our silicone rubber gaskets are made from aerospace mechanical 

grade AMS silicone, designed to withstand temperatures up 

to 400 degrees Fahrenheit and to last the life of the engine. 

Our gaskets seal uneven surfaces, eliminate corrosion and 

are 100% reusable.

We manufacture valve cover gaskets for:

Aircraft: Continental, Franklin, Lycoming, Pratt & Whitney 

and Wright radial piston aircraft engines.

Automobiles: Ford, GM, Mopar, Porsche and 

VW automobile engines.

Motorcycles:  BMW, Harley-Davidson, Suzuki, BSA, Ducati, 

Moto Guzzi, Norton, Triumph, Saab and most other 

motorcycle engines 

If you are tired of oil leaks, then a silicone rubber gasket is the 

only way to go, and REAL Gaskets Tennessee is the only 

place you can get “The Original” silicone rubber gasket.

MADE IN THE USA.