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Part # AF51695K
BRAKE MASTER CYLINDER SET
Get everything you need
ABI-199-62
WHEEL AND BRAKE KIT, 3-BOLT 1.5" AXLE
$4,840.00 / was $6,050.00
Product Details
Specifications
- Approval
- Kit with Approved Contents
- Condition
- New
- Manufacturer
- Airframes Alaska
- Dimensions
- L: 12 x W: 10 x H: 6 in
- Weight
- 2 lbs
- Unit of Measure
- Each
- McFarlane Part Number
- AF51695K
Product Description
Brake Master Cylinders
FAA-STC SA02582AK Replacement Master Brake Cylinder for Piper
The AF51695K brake master cylinders are FAA STC-approved (SA02582AK) replacements for the Scott 1248H (LH) and 1260H (RH) master cylinders. Featuring a smaller 13/16" diameter piston, generating higher hydraulic pressure with less foot-pedal effort for a more controlled, progressive brake feel.
The vented design eliminates the need to repeatedly top off brake fluid as linings wear, which is a common maintenance annoyance, and a factor in past brake fluid-related incidents.
Superior Braking Power
These brakes feature the smallest diameter piston available on the market, measuring 13/16 inches. In contrast to the standard 1-inch diameter piston used by all other brakes on the market, this design enables them to generate higher hydraulic pressure while requiring less force on the foot pedal.
Progressive Brake Control
The smaller diameter piston creates additional pedal travel, giving the brakes a progressive feel and providing more brake control with less force required.
Lightweight Brake System
This Master Brake Cylinder weighs 1.09 lbs, making it the lightest brake on the market while maintaining the heaviest stopping power.
Looking for a replacement parking brake? We also offer an FAA-PMA approved parking brake valve assembly AF51705 for Piper aircraft. This Scott 4500A-1 direct replacement is designed for a wide range of Piper PA-18, PA-19, PA-20, PA-22 aircraft, providing a dependable replacement solution for aging or worn parking brake systems. Read more here.
Note: before you order, your aircraft must already have FAA-approved high-pressure brake lines and brake calipers rated for at least 1,698 PSI (per TSO-C26 series or your aircraft's original certification basis). Installation requires an FAA Form 337 logbook entry. LH and RH cylinders must be installed as a matched pair, mixing is not approved.
WARNING: Cancer and/or Reproductive Harm - California Proposition 65 Resources
Eligible Aircraft
| Make | Model | Start S/N | End S/N | Eligibility Chart |
|---|---|---|---|---|
| Piper J3C-40 | J3C-40 | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3C-50 | J3C-50 | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3C-50S | J3C-50S | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3C-65 (Army L-4,L-4A,B,H,J, Navy NE-1,2) | J3C-65 (Army L-4,L-4A,B,H,J, Navy NE-1,2) | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3C-65S | J3C-65S | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3F-50 | J3F-50 | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3F-50S | J3F-50S | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3F-60 | J3F-60 | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3F-60S | J3F-60S | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3F-65 (Army L-4D) | J3F-65 (Army L-4D) | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3F-65S | J3F-65S | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3L | J3L | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3L-65 (Army L-4C) | J3L-65 (Army L-4C) | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3L-65S | J3L-65S | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper J3L-S | J3L-S | S/N 2325 – 9999999 | 9999999 | Eligibility Chart 7842 |
| Piper PA-11 | PA-11 | S/N 11-1 – 11-9999 | 11-9999 | Eligibility Chart 7842 |
| Piper PA-11S | PA-11S | S/N 11-1 – 11-9999 | 11-9999 | Eligibility Chart 7842 |
| Piper PA-12 | PA-12 | S/N 12-1 – 12-9999 | 12-9999 | Eligibility Chart 7842 |
| Piper PA-14 | PA-14 | S/N 14-1 – 14-9999 | 14-9999 | Eligibility Chart 7842 |
| Piper PA-18 | PA-18 | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18-105 (Special) | PA-18-105 (Special) | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18-125 (Army L-21A) | PA-18-125 (Army L-21A) | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18-135 (Army L-21B) | PA-18-135 (Army L-21B) | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18-150 | PA-18-150 | S/N 1809001 – 1809113 | 1809113 | Eligibility Chart 7842 |
| Piper PA-18-150 | PA-18-150 | S/N 18-3771 – 18-8309025 | 18-8309025 | Eligibility Chart 7842 |
| Piper PA-18A | PA-18A | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18A-135 | PA-18A-135 | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18A-150 | PA-18A-150 | S/N 18-3771 – 18-8309025 | 18-8309025 | Eligibility Chart 7842 |
| Piper PA-18AS-125 | PA-18AS-125 | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18AS-135 | PA-18AS-135 | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18AS-150 | PA-18AS-150 | S/N 18-3771 – 18-8309025 | 18-8309025 | Eligibility Chart 7842 |
| Piper PA-18S | PA-18S | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18S-105 (Special) | PA-18S-105 (Special) | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18S-125 | PA-18S-125 | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18S-135 | PA-18S-135 | S/N 18-1 – 18-7632 | 18-7632 | Eligibility Chart 7842 |
| Piper PA-18S-150 | PA-18S-150 | S/N 18-3771 – 18-8309025 | 18-8309025 | Eligibility Chart 7842 |
| Piper PA-19 (Army L-18C) | PA-19 (Army L-18C) | S/N 19-1 – 19-3 | 19-3 | Eligibility Chart 7842 |
FAQs
What aircraft are the McFarlane Alaska brake master cylinders (AF51695K) eligible for?
AF51695K fits Piper PA-11, PA-12, PA-14, PA-18, PA-19, PA-20, and PA-22 series aircraft, as well as the J3 and J5
What makes these master cylinders different from the standard ones?
They use a 13/16" diameter piston instead of the standard 1" piston. The smaller bore generates higher hydraulic pressure with less foot-pedal effort, giving a more controlled, progressive brake feel
Does the kit include both left- and right-hand cylinders?
Yes. AF51695K is a set that includes both the LH and RH side master cylinders
How much do they weigh?
Each cylinder weighs 1.09 lbs, making it the lightest brake master cylinder on the market while delivering the heaviest stopping power.
What is the pressure regulation system?
Vented. This keeps the reservoir supplied as brake linings wear, removing the need to frequently top off fluid, a maintenance step that's been linked to past brake-related incidents when skipped.
Is this a replacement for my Scott master cylinder?
Yes, the AF51695K brake master cylinders replace Scott 1248H (LH) and 1260H (RH) as a complete kit. However, your aircraft must already have FAA-approved high-pressure brake lines and calipers rated for at least 1,698 PSI. Refer to the ICA for more information.
Can I install just the LH or RH side and keep the other Scott cylinder?
No. Per our ICA instructions, it is required for both cylinders to be replaced as a matched LH/RH pair, mixing a new cylinder with an old Scott unit isn't approved.
