Skip to product information
SKU:
ZZ3F08506
Same day shipping if ordered by 4PM CST.
Air Filter Set 3466688 3466687 Fit Caterpillar D3K2 LGP D3K2 XL D4K2 LGP D4K2 XL
$93.59
In Stock
$93.59
Sale price
$93.59
Regular price
Part Number(s)
Estimated delivery between
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
Air Filter Set for Caterpillar
This air filter set includes primary and secondary filters with cross reference numbers 3466688 and 3466687, designed for Caterpillar D3K2 LGP, D3K2 XL, D4K2 LGP, and D4K2 XL dozers. It cleans incoming engine air to protect the turbocharger and internal components from abrasive dust and debris. This air filter set for Caterpillar ensures optimal airflow and filtration performance in demanding earthmoving conditions.
Overview
This air filter set for Caterpillar replaces OEM part numbers 3466688 and 3466687, providing a complete two-stage filtration solution. The set consists of an outer primary filter and an inner safety filter that work together to capture fine particles. Designed for Caterpillar D3K2 and D4K2 series machines, this air filter set maintains engine efficiency and prolongs service life.
Built For Performance
- High-capacity pleated media for extended service intervals
- Dual-layer filtration with primary and safety elements
- Rigid construction resists collapse under heavy airflow
- Precision-sealed gaskets prevent unfiltered air bypass
- Compatible with OEM cross references 3466688 and 3466687
Fits These Machines
- for Caterpillar D3K2 LGP
- for Caterpillar D3K2 XL
- for Caterpillar D4K2 LGP
- for Caterpillar D4K2 XL
On-The-Job Use
- Used in dozing, grading, and site preparation operations
- Replaces clogged filters during scheduled engine maintenance
- Suitable for dusty construction, quarry, and agricultural environments
- Keeps engine air intake clean in harsh operating conditions
Specs At A Glance
| Part Number(s) | 3466688, 3466687 |
| Type | Air Filter Set (Primary + Safety) |
| Compatible Brands | for Caterpillar |
| Compatible Models | D3K2 LGP, D3K2 XL, D4K2 LGP, D4K2 XL |
Good To Know
Q: What is the difference between the two filters in this air filter set for Caterpillar? A: The primary filter captures the bulk of contaminants, while the secondary safety filter protects the engine if the primary filter is damaged or during removal.
Q: How often should this air filter set be replaced? A: Replace when the filter restriction indicator signals a blockage or at the interval specified in the machine maintenance schedule, whichever comes first.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.