Part 0121-2 Avionics

S-TEC · 3 listings from 2 suppliers (Aircraft Parts & Salvage, Safe Skies Parts) · $280.00 – $1,495.00. Prices refresh weekly.

from $280

Price trend · weekly low by condition

WeekConditionListingsLowAvg
2026-W43used 3$280 $1,090
2026-W42used 3$280 $1,090
2026-W41used 3$280 $1,090
2026-W39used 3$280 $1,090
2026-W38used 3$280 $1,090
2026-W35used 3$280 $1,090

Description

Cessna 421 S-Tec Autopilot Yaw Computer with Connector 28v. P/N 0121-2. S/N 712A. We are unable to test this unit, however, we are selling this unit with a 30 day warranty. Removed in good condition from a parted out 11968 Cessna 421 N4594L S/N 421-0194. TTAF 4,235.4. Guaranteed to pass inspection or your money back. 30 Day Money Back Guaranteed less shipping costs. It is the buyer's responsibility to determine the parts suitability for installation and airworthiness upon inspection. We are a full service aircraft maintenance shop that sells new aircraft parts from surplus inventory auctions and parts from salvaged airplanes. We try to be as clear as possible in the descriptions of the items we have listed for sale. If you have any question regarding the suitability or condition of a part please let us know and we will have one of our mechanics check it out and give an honest answer as to it's condition. Unless otherwise noted we will ship the majority of our items via UPS. Free shipping is usually USPS. Tracking information will be sent to the E-mail account on file with Paypal, so please make sure your information is up to date. Terms and Conditions: Payment: Please pay within two (2) business days of auction's close. We accept Paypal and all major credit cards. Shipping: We will ship with in one (1) business day of receiving payment. We will gladly ship almost any item worldwide. International buyers, please contact us prior to paying. All buyers from OHIO please add

Price spread · 3 priced listings

$280
$1,495
$1,495
median Safe Skies Parts · $280 · used Cessna 421 S-Tec Autopilot Yaw Computer 28v P/N 0121-2 WARRANTY (0326-174) (click to open at supplier) Aircraft Parts & Salvage · $1,495 · used S-Tec Yaw Computer (0121-2) (click to open at supplier) Aircraft Parts & Salvage · $1,495 · used S-Tec Yaw Computer (0121-2) (click to open at supplier) $280 $1,495

Each dot is one listing (hover for supplier & condition); color = condition.

Price trend · weekly low

W35 — $280 W35 W38 — $280 W38 W39 — $280 W39 W41 — $280 W41 W42 — $280 W42 W43 — $280 W43 $294 $266