Mkekexe PTO Overrunning Clutch Coupler — 1-3/8" 6-Spline Male & Female, Heavy-Duty Alloy Steel, Quick-Release (Black)

Mkekexe heavy-duty PTO overrunning clutch coupler is a quick-release, replaceable tractor PTO connector with female and male 1-3/8" 6-spline ends for reliable power transfer and safe overrunning protection.

This replacement PTO quick-release coupler is engineered for demanding field and construction use where a durable, easy-to-service driveline component is needed. Machined from quenched alloy steel, finished with corrosion-resistant paint, and designed to fit common 1-3/8" 6-spline tractor shafts, it balances strength, wear resistance, and practical serviceability. The coupler offers overrunning (freewheeling) capability to protect implements during deceleration and provides a fast-release connection to speed up hook-up and maintenance.

How tough and durable is this PTO coupler under real working conditions?

The Mkekexe coupler uses high-strength alloy steel that has been quenched for increased hardness and wear resistance, then spray-finished to resist rust and abrasion. It’s tested for rugged jobs up to a specified torque and horsepower rating to help ensure a long service life in typical agricultural and light-construction settings.

• Material: quenched alloy steel for improved hardness
• Surface: spray-painted to reduce corrosion and wear
• Service life: designed for repeated hookups and field use
• Quality control: manufactured under ISO 9001 and IATF 16949 standards

What are the exact size, torque and power limits I should expect?

This replacement coupler features both female and male 1-3/8" 6-spline ends with an overall length of 7.3 inches. It is rated to handle up to 2400 Nm of torque and a maximum of 75 HP; the manufacturer advises against installation on tractors rated over 60 HP for safe, long-term operation.

• Input/output: female 1-3/8" 6-spline and male 1-3/8" 6-spline
• Overall length: 7.3 inches (approx.)
• Max torque: 2400 Nm
• Max HP: 75 (not recommended for tractors over 60 HP)

Which tractors and implements will this quick-release coupler work with?

The Mkekexe unit is built to fit common PTO interfaces and works with many tractor brands and implements that use the 1-3/8" 6-spline standard. It suits a wide range of farm and light construction gear, but you should confirm spline count and shaft diameter before ordering to ensure compatibility.

• Compatible brands: John Deere, Kubota, Massey Ferguson, Allis Chalmers, Case-IH, White-Oliver-Moline
• Use cases: tractors, harvesters, mowers, balers, tillers, light construction PTO-driven machinery
• Installation tip: verify spline count and shaft diameter match 1-3/8" 6-spline

What warranty and support come with the product?

Mkekexe backs this coupler with a one-year free warranty and factory quality systems certified to ISO 9001 and IATF 16949. If you have fitment questions or concerns about dimensions, the seller requests you contact them by email before purchasing to confirm the correct part.

• Warranty: one-year free warranty from purchase
• Quality: produced under ISO 9001 and IATF 16949 processes
• Pre-purchase: check part numbers and dimensions with seller email support

Who is this for: Farmers, contractors, and equipment owners who need a robust, quick-release PTO coupler that provides overrunning protection and fits 1-3/8" 6-spline shafts. It’s best suited for tractors and implements within the rated torque and horsepower limits, and for users who value a corrosion-resistant finish, ISO-certified manufacturing, and available warranty support.