Safety Air Filter C 17 149 for Komatsu, Hitachi — 163 mm, 409 mm
Secondary safety air filter element KA33503, 163 mm outer diameter, 134 mm inner diameter with a 17 mm bore, 188 mm outer diameter 1 and 409 mm overall height. Interchanges with MANN C 17 149, Hengst E564LS and Fleetguard AF820M. Fits Komatsu HA, HD, HM mining trucks and PC excavators, WA loaders, Hitachi CX and EX, Liebherr R 900, Doosan compressors, Renault TR and Deutz equipment.
📋 Key Specs
| Part Number | KA33503 |
| Filter Type | Engine air filter element, secondary safety |
| Outer Diameter | 163 mm |
| Inner Diameter | 134 mm |
| Inner Diameter 1 | 17 mm |
| Outer Diameter 1 | 188 mm |
| Overall Height | 409 mm |
| Media | Non-woven synthetic |
| Packaging | 1 piece |
❓ FAQ
No. It is a secondary safety element and sits downstream of the primary element. The primary element for this housing is C 29 939, which is a separate part.
C 29 939. It is the outer primary element for the same housing and is the one that carries the dust load. Replace both together: a safety element that has run behind a loaded primary is already partly blocked.
Both are 163/134/17/188 mm and 409 mm high, but the media and formulation differ. Always use the full part number with the slash; writing C17149 can ship the wrong element.
No. All four diameters match at 163/134/17/188 mm and only the height differs, 409 mm against 381 mm. They also take different primary elements, C 29 939 here and C 29 1055 or C 31 1256/2 there, which proves the housings differ. A wrong height leaves the end face unclamped and unfiltered air short-circuits into the intake.
No. Fleetguard AF820M is the safety element that matches C 17 149 on all dimensions. The C 17 126 reference on that page is a single-source error; MANN's own catalogue and the OE reverse lookup both land on C 17 149.
MOQ varies by product: 5–100 units for standard parts (see product page). Tier pricing decreases with volume. Custom parts usually ≥ 50 units, evaluated by process.
Stock/short-run: 7–15 days; bulk orders 20–35 days; custom 30–45 days incl. sampling. Note your deadline in the inquiry — sales will confirm capacity.
Add products to the inquiry list and submit with contact info. Sales contact you within 24h and issue a formal quotation (tier pricing + proforma invoice) within 48h. The AI assistant can pre-fill inquiries in chat.
Yes. We develop from drawings/samples and support private labeling. Process: evaluation → sampling (15–25 days) → approval → mass production.
Payment: T/T 30% deposit + 70% before shipment / L/C / Trade Assurance. Shipping: FOB Ningbo/Shanghai, CIF or DDP; EU & NA warehouses; sea/air/express.
ISO 9001 & IATF 16949; CE/UL/ATEX on key products. Every batch ships with inspection reports; third-party inspection (SGS/BV) supported.
Description
Product Overview
KA33503 is a secondary safety air filter element for the air cleaner housings on Komatsu mining trucks, excavators and loaders, Hitachi cranes and excavators, Liebherr R 900 and Doosan compressors. It measures 163 mm outside diameter, 134 mm inside diameter with a 17 mm bore, 188 mm at outer diameter 1 and 409 mm overall height. A safety element sits downstream of the primary element; its primary partner is C 29 939 and is ordered separately.
