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Oil Filter

KT-OF3645 — replaces Fleetguard LF691

Kaltreo KT-OF3645 oil filter, replaces Fleetguard LF691 — cross-references PF879, LK77501, SWT603043

KT-OF3645 is an oil filter that replaces Fleetguard LF691. Key specifications include a 1 1/2-16 UNF 2B IN thread size, 11.309848627 in height, and 4.7350299 IN largest outside diameter. It cross-references 29 brands, including Baldwin B49 and Donaldson P172535, P554105. Verified fitment is Caterpillar 3406 diesel, supported by a reliable cross-reference path and confirmed against the manufacturer's parts documentation.

Cross-reference

BrandPart number(s)
FleetguardLF691
AcPF879
Ap LockheedLK77501
Aveling-barfordSWT603043
BaldwinB49
Big A92722
Carquest85722
Caterpillar1R0716, 8T7452
Demag499074
DonaldsonP172535, P554105
Flo-linePL691
FramHPH3335FP, PH3335, PH3426
Gmc6439658
Grove9414100363
HastingsFP359, LF359, P359
HengstH300WD01
KenworthLW691
KomatsuL691PP
KralinatorL190, L1904
Luber-finerLFP4005, LFP8469
Mann-filterW131452
Morbark29245330
Napa1722
Paccar PartsY05017412
PurolatorL50070, PER70
Sullair953
Tec-filPS405, PSL405
Volvo172015003
WixWIX FILTERS, 51722
WoodgateWGL691

Fitment engine

Caterpillar 3406 diesel engines.

Why this fits: A reliable cross-reference path directly ties Fleetguard LF691 to Caterpillar 3406: FinditParts states the LF691 is specified for Caterpillar 3406 engines, and Donaldson’s cross-reference lists Fleetguard LF691 as the equivalent for Donaldson P554105, a Caterpillar full-flow oil filter application. That supports LF691 as an oil filter option for the Caterpillar 3406. Verified against source ↗

Specifications

AttributeValue
Capacity Test SpecificationISO 4548-12 IN
Gasket Inside Diameter3.8649529000000005 IN
Gasket Outside Diameter4.3598338 IN
Height11.309848627 in
Hydrostatic Burst Minimum203.0 IN
Largest Outside Diameter4.7350299 IN
Pressure ValveNo IN
Primary Particle Efficiency24.6 micron (c) @ 68% IN
Rated Flow17.4372 IN
Thread Size1 1/2-16 UNF 2B IN

Related oil filters

KT-OF6065

replaces Fleetguard LF691A
Caterpillar 3406

KT-OF4921

replaces Fleetguard LF9691
Caterpillar 3406

KT-OF7499

replaces Fleetguard LF3342
Caterpillar 3208

KT-OF5053

replaces Fleetguard LF3472
Caterpillar C13

KT-OF0787

replaces Fleetguard LF667
Caterpillar 3306

KT-OF3690

replaces Fleetguard LF9691A

Brand names and part numbers are the property of their owners and are used for reference and interchange identification only. Kaltreo is not affiliated with, and its products are not endorsed by, these owners.

See more: All oil filters · All products · Fleetguard cross-reference table

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