John Deere Secondary Air Cleaner Filter - M123378

Key Features

• Secondary Safety Filtration: an internal layer positioned inside the primary air filter housing to provide backup protection against contaminants.
• High‑Efficiency Media: specialized filtration material captures fine dust and debris before they reach the engine, reducing wear on intake components.
• Precision Pleated Design: evenly spaced pleats expand the media surface area for improved filtration efficiency without restricting airflow.
• OEM-Grade Compatibility: genuine John Deere part (M123378) engineered to fit appropriate air‑clearance assemblies and ensure proper fitment.
• Easy Replacement: designed for straightforward servicing during routine air‑filter maintenance, minimizing downtime.
• Impact on Engine Performance: contributes to cleaner air intake, supporting more consistent combustion, potential fuel efficiency benefits, and longer engine life in dusty operating conditions.

Product Details

• Product Type: Secondary Air Filter Element (Inner / Safety Filter)
• Brand: John Deere
• Part Number: M123378
• Filter Type: Secondary / Inner air cleaner element
• Outer Diameter: 31.1 mm
• Length: 173.8 mm
• Weight: 0.113 kg

Compatibility

• The John Deere M123378 Secondary Air Filter is used across a broad range of equipment, including compact tractors, turf equipment, Gators, and utility machines. Refer to the list below for model ranges and specific family groups:
• Compact Tractors: 1023E, 1026R, 22104010410041104115; ProGator Series: 2020, 2020A, 2030, 2030A; ProGator Turf & Fairway Mowers: 2500, 2500A, 2500B, 2500E, 2653A, 2653B, F620, F680, F735
• Utility Vehicles / Gators: 4x2 Diesel Gator, 4x2 HPX, 4x4 HPX, Gator 6x4, Gator HPX615E, HPX815E, XUV625i, XUV825i, XUV850D, XUV855D, XUV855EX, XUV855MX, XUV865EX, XUV865MX, XUV865R
• X-Series Tractors: X465, X595, X740, X744, X748, X749, X750, X754, X758, X940, X948, X949, X950R
• Note: Compatibility may vary depending on machine configuration and serial number. Always confirm with your equipment’s parts catalogue before ordering.