In stock

71450

Name: 71450
Brand: Lycoming™ Engines
SKU: NAT-M9K8AI3B
Price: 11.25 USD
Availability: InStock

by Lycoming™ Engines

The RG-71450 silicone valve cover gasket related to 71450 has a thickness of 1/8 inch.

$11.25

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71450

$11.25

Product Description

This part is a silicone valve cover gasket used to seal the valve or rocker box covers on selected Lycoming aircraft engines, providing a reusable sealing interface at the cover mounting flange.

0 1. Overview

The gasket associated with Lycoming part reference 71450 is produced in a silicone material formulated for lubricating oil resistance and low compression set. In the Real Gaskets configuration RG-71450, the gasket is one eighth of an inch thick and includes nine bolt holes. The silicone construction is described as reusable when inspected and found free of cracks, tears, or deterioration.

Application data links this gasket family to Lycoming IO-540-B series, IO-540-E and IO-540-M series engines, as well as TIO-540-A and LTIO-540-A series engines with nine fastener positions at the cover, and to broader Lycoming engine coverage including IO-540, TIO-540, LTIO-540, TIO-541-A1A, and IO-720 variants listed for the corresponding silicone valve cover gasket. The Real Gaskets RG-71450 version is FAA-PMA approved.

One silicone rocker or valve cover gasket of similar geometry is documented with a weight of 0.025 pounds and nominal dimensions of 7 inches by 6 inches by 0.056 inches. Installation guidance for the RG-71450 configuration specifies clean and dry gasket and mating surfaces, dry installation without sealant, and torque of the valve cover screws to 25 inch-pounds on installation followed by re-torque to 20 inch-pounds after an engine run and at subsequent annual checks.

0 2. Key Features

Silicone valve or rocker box cover gasket associated with Lycoming reference 71450
Manufactured from silicone material formulated for lubricating oil resistance and low compression set
Gasket thickness is 1/8 inch in the RG-71450 configuration
Gasket incorporates nine bolt holes
Design supports reuse after inspection of physical condition
Application information covers Lycoming IO-540-B, IO-540-E, IO-540-M, and selected TIO-540 and LTIO-540 engine models
RG-71450 configuration is documented as FAA-PMA approved
Installation procedure specifies dry installation on clean gasket and cover surfaces
Torque guidance specifies 25 in-lb on installation and 20 in-lb on re-torque after operation
A similar silicone valve cover gasket of this pattern lists nominal dimensions of 7 in x 6 in x 0.056 in and weight of 0.025 lb

0 3. Specifications

Part number: 71450
Related model designation: RG-71450
Gasket type: silicone valve cover or rocker box cover gasket
Material: silicone rubber formulated for lubricating oil resistance and low compression set
Thickness: 1/8 in
Bolt holes: 9
Nominal dimensions (similar silicone gasket of this pattern): 7 in x 6 in x 0.056 in
Approximate weight (similar silicone gasket of this pattern): 0.025 lb
Applications (Real Gaskets RG-71450 configuration): Lycoming IO-540-B series (9 holes), IO-540-E series (9 holes), IO-540-M series (9 holes), TIO-540-A series (9 holes), LTIO-540-A series (9 holes)
Additional applications for silicone valve cover gasket with OEM number 71450: Lycoming IO-540-B, IO-540-E, IO-540-M, and TIO/LTIO-540-A series
Regulatory approval (RG-71450 configuration): FAA-PMA approved
Country of manufacture for RG-71450: United States
Torque on initial installation (RG-71450): 25 in-lb on cover bolts
Torque after engine run and at periodic checks (RG-71450): 20 in-lb on cover bolts

FAQs

01. What material is used for the valve cover gasket associated with Lycoming number 71450?

The valve cover gasket associated with Lycoming number 71450 is produced in silicone material formulated for lubricating oil resistance and low compression set.

02. How thick is the RG-71450 silicone valve cover gasket related to 71450?

The RG-71450 silicone valve cover gasket related to 71450 has a thickness of 1/8 inch.

03. How many bolt holes are provided in the RG-71450 gasket configuration?

The RG-71450 gasket configuration includes nine bolt holes.

04. Which Lycoming engine families use the silicone valve cover gasket corresponding to OEM number 71450?

The silicone valve cover gasket corresponding to OEM number 71450 is documented for Lycoming IO-540-B, IO-540-E, IO-540-M, and TIO/LTIO-540-A engine series.

05. What installation torque is specified for cover bolts when installing the RG-71450 gasket?

The installation procedure for the RG-71450 gasket specifies torquing the cover bolts to 25 inch-pounds initially and re-torquing to 20 inch-pounds after engine run and at later checks.