John Deere 840 Air Filter: Part Number, Size & Cross Reference

Quick answer:

The John Deere 840 tractor primary engine air filter part number found is AT75035. Filter dimensions found include Inner diameter: 13 in / 330 mm.

Primary air filterAT75035
Filter sizeInner diameter: 13 in / 330 mm
Engine power37.5 hp

John Deere 840 Air Filter Specs

Primary air filter part number AT75035
Secondary / safety air filter AN403919
Air filter size Inner diameter: 13 in / 330 mm
Inner diameter 13 in / 330 mm
Number of air filter elements 2 elements (primary, secondary)
Engine horsepower 37.5 hp
Engine displacement 177 cu in (2.9 L)

John Deere 840 Air Filter Charts

Air filter dimensions

Inner diameter

13 in

Engine horsepower

This model

37.5 hp

Average

35 hp

Low

18 hp

High

66 hp

Engine displacement

This model

177 cu in

Average

100 cu in

Low

50 cu in

High

180 cu in

John Deere 840 Air Filter FAQ

What air filter does the John Deere 840 use? The primary engine air filter part number found for the John Deere 840 is AT75035.
What size is the John Deere 840 air filter? The air filter dimensions found for the John Deere 840 are Inner diameter: 13 in / 330 mm. Use these dimensions as a fit check, but treat the part number as the main match.
How many air filter elements are listed for the John Deere 840? This page lists 2 elements (primary, secondary). That means the safety element should be treated separately from the outer primary air filter.
Why include engine specs on a John Deere 840 air filter page? For the John Deere 840, the engine specs found are 37.5 hp, 177 cu in (2.9 L). This is useful context when comparing similar models, but not a substitute for checking the filter number AT75035.
Should I order the John Deere 840 air filter by size or part number? Buy by AT75035 first for the John Deere 840. The dimensions value is useful for checking an aftermarket listing before ordering.
What should I confirm before buying a John Deere 840 air filter? For the John Deere 840, confirm AT75035 against John Deere parts information and use the listed dimensions of Inner diameter: 13 in / 330 mm as a physical check.
Official information note

Air filter fit can change by engine, serial number, production year and air-cleaner housing. Check the operator manual, parts manual and official deere.com website before buying or fitting an air filter.