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BALDWIN A PARKER HANNIFIN BRAND | HEAVY-DUTY FILTRATION
32 Individual Tubes (4×8 Array) | Farr Housing | Made in Mexico
504.8 × 268.3 × 207.2 mm
Allis Chalmers • International • Michigan • M-R-S • Ingersoll-Rand
🔗 CROSS-REFERENCE & APPLICATION NUMBERS
ⓘ NOTE: PA1781 is a specialist tube-type element. Cross-reference data for this filter type is extremely limited due to its age and niche application — Farr P32 is the primary confirmed equivalent. Buyers searching by housing type, tube count (32), or any of the OEM brands listed above will find this part.
WHY THIS FILTER
● Genuine Baldwin Tube-Type Air Filter — a fundamentally different technology from pleated paper elements — instead of a single pleated media pack, PA1781 contains 32 individual filter tubes arranged in a 4×8 array; each tube is an independent filtration unit; this design was standard in Farr air cleaner housings fitted to large earthmoving equipment before radial seal and dry-type cartridge filters became universal; the tubes are not interchangeable with any other filter design.
● Replaces Farr P32 — the primary and most searched cross-reference — Farr (now part of Camfil) manufactured the air cleaner housings that this element fits; the \"optional Farr housing\" designation means these housings were fitted by the equipment manufacturer as an option, making PA1781 the correct replacement element regardless of whether the housing label says Farr or the OEM brand.
● Covers Allis Chalmers, International (IH / IHC), Michigan, and M-R-S Equipment — the four original OEM equipment families for this filter are classic American earthmoving and construction brands; Allis Chalmers scrapers and motor graders, International Harvester construction equipment, Michigan wheel loaders and scrapers, and M-R-S (Motor and Road Service) equipment — all vintage construction and mining iron that still operates on job sites and in collections today.
● Also covers Ingersoll-Rand portable compressors — IR used the same Farr tube-type housing on a range of towable and skid-mounted diesel compressors from the same era; owners and rental fleet operators maintaining older IR compressors search specifically for this tube-type element and rarely find it in stock.
● One of the hardest-to-find Baldwin air filter elements on the market — tube-type filters are no longer manufactured by most suppliers; Baldwin / Parker Hannifin is one of the last sources for new-production PA1781; buyers who need this element have very few options and are often forced to pay inflated prices through specialty dealers or go without.
● Free shipping to all 48 contiguous US states — no handling fees, no hidden charges, no surprises at checkout.
Motor Graders & Earthmovers
(Farr optional housing fitted)
International Harvester (IH / IHC)
Heavy Construction Equipment
(Farr optional housing fitted)
All models using Farr P32
tube-type element housing
Michigan Scrapers
(Farr optional housing fitted)
M-R-S Equipment
(Motor & Road Service Equipment)
(Farr optional housing fitted)
Any Farr tube-type housing
requiring P32 / 32-tube element
Diesel Compressors
(Farr tube-type housing fitted)
Towable and skid-mounted units
Rental fleet and contractor units
Any I-R compressor with
Farr P32 housing specification
(Search: Farr P32, Baldwin PA1781)
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