Caterpillar 3406C Industrial 4W-4250 COOLANT CONDITIONER GP Parts
Caterpillar 3406C 4W-4250 COOLANT CONDITIONER GP: 26 catalog entries transcribed from the supplied original PDF from the 3406C Industrial Engine · 6TB9857-Up (Engine) configuration.
Engine and Catalog Identification
Source configuration: 3406C Industrial Engine · 6TB9857-Up (Engine). Application: Industrial. Reviewed chapter: 4W-4250 COOLANT CONDITIONER GP. Archive index label: 4W-4250 COOLANT CONDITIONER GP. The supplied archive identifies its source as CATERPILLAR 3406C INDUSTRIAL ENGINEN PARTS MANUAL.pdf; source page 471. Check the full engine serial number, arrangement number, application and original notes before ordering. This section does not establish interchangeability with other configurations.
Original PDF Assembly Scope and Conditions
Original PDF physical page 471: COOLANT CONDITIONER GP 4W-4250 FOR USE WITH AIR COMPRESSOR. CANNOT BE USED WITH LH AIR STARTER WHEN USED WITH MECHANICAL SHUT-OFF AN ATTACHMENT TYPE 1.
The parts table retains the separate source assembly for each entry. Drawings retain their own original assembly headings and may show a narrower component scope. Original part numbers, conditions, graphic references, product levels and note flags apply; no interchangeability is implied.
Illustrations | Parts table | Request a quote
4W-4250 COOLANT CONDITIONER GP Illustrations

Original Caterpillar Parts List
The original part number is retained. Common Caterpillar Number is the same recognized number with its hyphen removed, for example 3N-2886 → 3N2886. Letters, digits and leading zeros remain unchanged. This is a spelling variant, not a substitute part or fitment guarantee. Unrecognized formats are marked for verification. Original quantities and notes apply; quantities do not indicate stock. An em dash represents an empty source field. Original manual page references are retained as source references.
| Ref. | Original Part Number | Common Caterpillar Number | Catalog Qty. | Original Description | Original Catalog Notes | Enquiry |
|---|---|---|---|---|---|---|
| 1 | 2N-3378 | 2N3378 | 1 | ELBOW-FLARED | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 2 | 3J-5390 | 3J5390 | 2 | PLUG | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 3 | 9N-3666 | 9N3666 | 2 | VALVE-MANUAL (COOLANT CONDITIONER) | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 4 | 003-2143 | 0032143 | 1 | ELBOW | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 5 | 9N-3367 | 9N3367 | 1 | FILTER-COOLANT CONDITIONER (PRECHARGE) –OR– | Original note flags: J; Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| — | 9N-3368 | 9N3368 | 1 | FILTER-COOLANT CONDITIONER (MAINTENANCE) | Original note flags: A; Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 6 | 4W-5045 | 4W5045 | 1 | BRACKET | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 7 | 0S-1594 | 0S1594 | 2 | BOLT (3/8-16X1-IN) | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 8 | 5M-2894 | 5M2894 | 6 | WASHER-HARD (10.2X18.5X2.5-MM THK) | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 9 | 0S-1588 | 0S1588 | 2 | BOLT (3/8-16X1.25-IN) | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 10 | 001-6449 | 0016449 | 2 | CONNECTOR | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 11 | 3P-6049 | 3P6049 | 1 | HOSE AS | Original note flags: I; Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 12 | 001-9440 | 0019440 | 2 | CONNECTOR | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 13 | 3B-7259 | 3B7259 | 1 | ELBOW | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 14 | 012-8140 | 0128140 | 1 | BUSHING-TERMINAL | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 15 | 4K-8864 | 4K8864 | 2 | CLIP | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 16 | 6H-7127 | 6H7127 | 1 | SPACER (13/32X5/8X9/16-IN THK) | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 17 | 0S-1571 | 0S1571 | 1 | BOLT (3/8-16X1.75-IN) | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 18 | 1L-2279 | 1L2279 | 1 | ELBOW | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 19 | 0S-0509 | 0S0509 | 1 | BOLT (3/8-16X0.75-IN) | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 20 | 5B-8978 | 5B8978 | 1 | TEE | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 21 | 5N-5646 | 5N5646 | 1 | HOSE AS | Original note flags: I; Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 22 | 9N-3668 | 9N3668 | 1 | BASE AS | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| — | 9N-3645 | 9N3645 | 1 | STUD-TAPERLOCK | Graphic ref.: 1; Product level: 2; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 23 | 5B-1309 | 5B1309 | 1 | COUPLING-PIPE | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
| 24 | 3B-7741 | 3B7741 | 1 | NIPPLE-PIPE (CLOSE) | Graphic ref.: 1; Product level: 1; Source PDF section: 4W-4250 COOLANT CONDITIONER GP | Request a Quote |
Original PDF Table Notes
A-NOT PART OF THIS GROUP I-REFER TO HYDRAULIC INFORMATION SYSTEM J-REFER TO CHART FOR COOLANT CONDITIONER INFORMATION
Request a Quote from WinsDiesel
Send the original part number, required quantity, Caterpillar 3406C engine serial number, arrangement number, application, component photos and delivery country. Supplied contents, specification, availability and lead time will be confirmed in the quotation.
Send an enquiry or email winsparts@winsparts.com.
Related Caterpillar Catalog Sections
- Caterpillar 3406C Industrial 7C-7425 CONVERSION GP–AFTERCOOLER Parts
- Caterpillar 3406C Industrial 2W-4125 COOLER AR-TRANSMISSION OIL Parts — Source page 479
- Caterpillar 3406C Industrial 180-9571 V-BELT SET–INCLUDES 4-BELTS, FAN DRIVE Parts
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