H157812-WN John Deere header knife head bushing

H157812 – Knifehead Ring / Wear Sleeve, JohnDeere

Nylon Wear Sleeve H157812 (also known as Knifehead Ring) is made of durable nylon and is used to protect the knife head on JohnDeere platform headers. The part ensures precise guidance of discs / knives and reduces wear on metal components.

Characteristics:

Type: wear sleeve for the knife head (bevel), made of nylon

Material: high-strength nylon provides self-lubrication and reduces contact wear

Purpose: protects the knife drum body and guides the knife disc elements during operation

Weight and dimensions: lightweight and compact part; replacement of previous bushings on the landing.

Compatibility:

Fits John Deere and AGCO‑Gleaner headers including: 625D/630D/635D/640D/620R/625R/630R/635R

730D/735D/740D/745FD, 925D/930D/936D

Also fits Challenger (FDH/FHB/RHB) and other 9255 series platforms.

Benefits:

John Deere OEM quality: precise fit and compatibility without adaptation

Long service life: nylon construction reduces friction and provides wear resistance

Drum structure protection: prevents damage to the metal surface of the knifehead

Easy to replace: does not require complex disassembly for maintenance