Product Details
Fuel Cap Seal
Don’t pay for a fuel cap when you only need to replace the seal!
Round o-ring made of Viton to eliminate any swelling issues experienced when using Autogas.
This gasket is not approved for use on all Piper fuel cap assemblies. Please view PMA Supplement 79 to verify use of this gasket on your specific fuel cap assembly.
Eligible Aircraft
| Make | Model | Start S/N | End S/N | Comment | Eligibility Chart |
|---|---|---|---|---|---|
| Piper | PA-28-140 | 28-20001 | 28-7725290 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28-150 | 28-1761 | 28-4377 | 6636 | |
| Piper | PA-28-151 | 28-7415001 | 28-7715314 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28-160 | 28-1761 | 28-4377 | 6636 | |
| Piper | PA-28-161 | 2816001 | 2816119 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28-161 | 2841001 | 2841365 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28-161 | 2842001 | 2842999 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28-161 | 28-7716001 | 28-8616057 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28-180 | 28-1761 | 28-7505260 | 6636 | |
| Piper | PA-28-181 | 28-7690001 | 28-8690062 | Used with fuel cap assemblies P/N 66817-00 and 39824-02 only. | 6636 |
| Piper | PA-28-201T | 28-7921001 | 28-7921095 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28-235 | 28-10001 | 28-7710089 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28-236 | 2811001 | 2811050 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28-236 | 2845001 | 2845999 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28-236 | 28-7911001 | 28-8611008 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28R-180 | 28R-30002 | 28R-7130013 | 6636 | |
| Piper | PA-28R-200 | 28R-35001 | 28R-7135238 | 6636 | |
| Piper | PA-28R-201 | 2837001 | 2837061 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28R-201 | 2844001 | 2844999 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28R-201 | 28R-7737002 | 28R-7837317 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28R-201T | 2803001 | 2803012 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28R-201T | 28R-7703001 | 28R-7803373 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28RT-201 | 28R-7918001 | 28R-8218026 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28RT-201T | 2831001 | 2831038 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-28RT-201T | 28R-7931001 | 28R-8631005 | Used with fuel cap assembly P/N 66817-00 only. | 6636 |
| Piper | PA-32-260 | 32-1 | 32-7800008 | 6636 | |
| Piper | PA-32-300 | 32-40000 | 32-7840222 | 6636 | |
| Piper | PA-32-300 | 32-7940001 | 32-7940290 | 6636 | |
| Piper | PA-32-301 | 3206001 | 3206060 | Used with fuel cap assembly P/N 38599-02 only. | 6636 |
| Piper | PA-32-301 | 32-8006002 | 32-8606023 | Used with fuel cap assembly P/N 38599-02 only. | 6636 |
| Piper | PA-32-301T | 32-8024001 | 32-8424002 | Used with fuel cap assembly P/N 38599-02 only. | 6636 |
| Piper | PA-32R-300 | 32R-7680001 | 32R-7880068 | 6636 | |
| Piper | PA-32R-301 | 3213001 | 3213103 | 6636 | |
| Piper | PA-32R-301 | 3246001 | 3246999 | 6636 | |
| Piper | PA-32R-301 | 32R-8013001 | 32R-8613006 | 6636 | |
| Piper | PA-32R-301T | 3229001 | 3229003 | 6636 | |
| Piper | PA-32R-301T | 3257001 | 3257999 | 6636 | |
| Piper | PA-32R-301T | 32R-8029001 | 32R-8629008 | 6636 | |
| Piper | PA-32RT-300 | 32R-7885002 | 32R-7985106 | 6636 | |
| Piper | PA-32RT-300T | 32R-7787001 | 32R-7987126 | 6636 | |
| Piper | PA-34-200 | 34-7250001 | 34-7450220 | 6636 | |
| Piper | PA-34-200T | 34-7570001 | 34-8170092 | 6636 | |
| Piper | PA-34-220T | 3433001 | 3433172 | Used with fuel cap assemblies P/N 38599-02 and 39824-02. | 6636 |
| Piper | PA-34-220T | 3447001 | 3447029 | Used with fuel cap assemblies P/N 38599-02 and 39824-02. | 6636 |
| Piper | PA-34-220T | 3448001 | 3448079 | Used with fuel cap assemblies P/N 38599-02 and 39824-02. | 6636 |
| Piper | PA-34-220T | 3449001 | 3449999 | Used with fuel cap assemblies P/N 38599-02 and 39824-02. | 6636 |
| Piper | PA-34-220T | 34-8133001 | 34-8633031 | Used with fuel cap assemblies P/N 38599-02 and 39824-02. | 6636 |
| Piper | PA-38-112 | 38-78A0001 | 38-82A0122 | 6636 | |
| Piper | PA-44-180 | 4496001 | 4496999 | Used with fuel cap assembly 66817-02 only. | 6636 |
| Piper | PA-44-180T | 44-8107001 | 44-8207020 | Used with fuel cap assembly 66817-02 only. | 6636 |
Part Number Information
Supersedes Part Numbers
CA66185-000 | CA66815-000 | 462-056 | 66815-000
Cross-reference information
Cross Reference Reference only: Please verify the product is eligible for your aircraft before adding to your cart. OEM Part Number McFarlane Part Number Comment CA66185-000 CA66815-000A CA66815-000 CA66815-000A 462-056 CA66815-000A 66815-000 CA66815-000A
Additional product information
Approval: FAA PMA SupersedesPartNumber: CA66185-000 SupersedesPartNumber: CA66815-000 SupersedesPartNumber: 462-056 SupersedesPartNumber: 66815-000
Product Documents
Frequently Asked Questions
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.





