6637 ...CAT

[chadandalysse]

So ive seen this 6637 filter that everyone seems to love so much here. What is this filter actually made for originally? Is there anything special about the design as for running it as an open filter?

The reason im curious is I work at CAT and we have filters that look exactly the same off our excavators and bulldozers etc. and im wondering if I could just do the same thing with one of those. I just want to make sure there is no weird design difference.

[chadandalysse]

oh ya and does anyone have the measurments of the filter so I can find one the same size?

[timmyboy76]

Wix 46637 & Napa 6637 Air Filter: FleetFilter Secure Online Store

[BIG Laing]

It is designed for a much larger engine. It has way more surface area then the stock filter so it flows much better. And a do it your self air filter for under $50! Why would anyone pay for an intake?

[blue99stroker]

it is a heavy equipment filter, so im sure it could be on one the bigger tractors and such.

[rufushusky]

Originally Posted by chadandalysse

So ive seen this 6637 filter that everyone seems to love so much here. What is this filter actually made for originally? Is there anything special about the design as for running it as an open filter?

The reason im curious is I work at CAT and we have filters that look exactly the same off our excavators and bulldozers etc. and im wondering if I could just do the same thing with one of those. I just want to make sure there is no weird design difference.

Odds are you are seeing the Cat x-reference for it...

PART NUMBER: PA2818
Descriptions : Air Element
Replaces : Donaldson ECB085011
O.D. : 8 1/2 (215.9)
I.D. : 4 (101.6) One End
Length : 12 3/8 (314.3)

Here is a list of cross over numbers for most major manufactures for the same filter from the Baldwin website. You can also go to the Baldwin website and put your zip in to find local dealers.

ACDELCO A1474C

AIR REFINER ARM08-5011

BALDWIN FILTERS PA2818

BIG A 94637

CATERPILLAR 3I0003

CARQUEST 88637

CUMMINS 2912986

CUMMINS 3912020

DONALDSON B085011 H

DONALDSON ECBO85011 H

DONALDSON ECB085011 H

FLEETGUARD AH1141

FLEETRITE AHR81141

FRAM CA6818

GFF AF359214

GENERAL MOTORS CORP. 25177209

HASTINGS PREMIUM FILTERS AF2329

HERCULES B085008

KRALINATOR LA1458

LUBER-FINER LAF2533

NAPA GOLD 6637

SCHUPP SL12903

WIX 46637

WIX 546637

WOODGATE WGA1138

[Va7.3L]

Got this from another forum but the Cat cross reference for the 6637 is 3I0003.

Oops, a little late!

[Macon]

Yeah, that cross reference number doesn't match up to anything CAT from my searching.