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FSS-KT-1 (fss-kt-1.jpg)
Part Number FSS-KT-1

FSS-KT-1, FUEL SHUT-OFF VALVE O-RING

Part # FSS-KT-1

FUEL SHUT-OFF VALVE O-RING


$20.17
Retail Price: $21.29
Expected ship date is 11-10-2026. (typically ships in 1-3 business days)

Product Details

Specifications

Approval
FAA PMA
Condition
New
Manufacturer
McFarlane Aviation
Dimensions
L: 5.5 x W: 4 x H: 0.25 in
Weight
0.0125 lbs
Unit of Measure
Each
McFarlane Part Number
FSS-KT-1

Product Description

Note: This kit contains 3 O-rings.

Seal Kits

Only McFarlane has FAA approval to replace the old, less fuel resistant o-rings with the latest fuel-proof fluorocarbon o-rings!

Conveniently packaged to include all of the necessary o-rings and/or gaskets applicable to specific single engine Cessna aircraft models. McFarlane replaces the old Buna-N or Nitrile (MS series) o-rings and early synthetic rubber (NAS series) o-rings with fluorocarbon elastomer, which has improved fuel and heat resistance. Cork/rubber gaskets meet tough government standards for fuel resistance.

WARNING: Cancer and/or Reproductive Harm - California Proposition 65 Resources

Eligible Aircraft
Make Model Start S/N End S/N Quantity Per Aircraft Location Eligibility Chart
Cessna 150M150MS/N 15078506 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna A150MA150MS/N A1500685 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna F150MF150MS/N F15001339 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna FA150M (when equipped w/FKA150-2311 & FKA150-2316)FA150M (when equipped w/FKA150-2311 & FKA150-2316)S/N FA1500312 – FA1500336FA1500336Quantity Per Aircraft 1Location fuel valveEligibility Chart 1610
Cessna FRA150MFRA150MS/N FR1500312 – FR1500336FR1500336Quantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna 152152S/N 15279406 – 1528603315286033Quantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna A152A152S/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna F152F152S/N F15201429 – F15201980F15201980Quantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna FA152FA152S/N FA1520337 – FA1520425FA1520425Quantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna A185FA185FS/N 18503154 – 1850444818504448Quantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna A188BA188BS/N 18802746 – 1880397318803973Quantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna A188B (w/ large hopper)A188B (w/ large hopper)S/N 18803297T – 18803973T18803973TQuantity Per Aircraft Location fuel valveEligibility Chart 1610
Cessna T188CT188CS/N T18803325T – T18803974TT18803974TQuantity Per Aircraft Location fuel valveEligibility Chart 1610
FAQs

How do I keep contaminants out of my fuel system?

The fuel selector valve works in unscreened fuel. Contaminated fuel can cause selector valve seal damage. When fueling from possibly contaminated fuel sources McFarlane recommends the use of a fuel filter, such as Mr. Funnel or another filtering device, to reduce trash in the fuel system.

What pressure is used to test the fuel selector valves after repairs?

We pressure test our repaired valves to a minimum of 5 psi using precision controlled air pressure and a calibrated low pressure indicator. This pressure is above the normal fuel pressure on the valve and below the limits of the springs in the valve. Each valve is submerged in Stoddard solvent while the air pressure is applied to the valve. The valves are then tested in each position to assure that there are no inter-port or external leaks. Leaks are detected by looking for air bubbles escaping from the valve.

How do I know when to replace or service my fuel selector valve?

The most common indication of external fuel valve leaks is the smell of avgas in the cabin. Most valves are located under the cabin floor. Fuel stain on the valve and drain plug or drain valve or on the belly of the aircraft can also indicate external leakage. External leaks are generally around the actuation valve stem. Internal leaks are detected when the fuel is turned off and fuel continues to drip during fuel system maintenance. Inner port leakage will allow fuel from one tank to leak into another fuel tank. This type leak is difficult to detect. Fuel transfer from one tank to another with the fuel valve selected to one tank only will indicate inner-port leakage. An extended period of time is needed to detect fuel transfer from one tank to another. Generally if internal leakage is detected when servicing the fuel system, it is likely there is also inner-port leakage. 

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