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BOCK FKX50 655K & 830K Bus AC Compressors – 6-Cylinder Heavyweights of the BOCK FKX50 Family | R134a
- Overview
- Recommended Products
- Heavy coaches & luxury tourist coaches: High cooling duty at continuous highway speeds.
- Articulated & double-decker buses: Six-cylinder displacement to match passenger volume.
- Long-distance intercity fleets: Middle East, Africa and Latin America summer-peak duty.
- Transport refrigeration: R134a circuits in mobile refrigeration duty.
- Rebuilt or new, every unit leaves with a leak test, performance check and quality audit card.
- TS16949 / ISO9001 certified manufacturing environment.
- Warranty terms confirmed per order (factory-backed).
- Full FKX50 spare-parts supply – pistons, connecting rods, valve plates, gaskets, clutches.
- Headquarters: No. 28, Jili West Road, Jiuhua Economic Development Zone, Xiangtan City, Hunan Province, China
- WhatsApp / WeChat: +86-18670382782 | Landline: +86-0731-82034997 / 82034998
- E-Mail: [email protected]
- Websites: www.weilipart.com | www.weiliautomotive.com | www.cooliparts.com
The FKX50 Family: Six-Cylinder Muscle for the Toughest Bus AC Duty
BOCK's FKX50 compressors carry the unique K valve-plate system built for the toughest demands in bus air-conditioning – the same family trusted across Europe's coach fleet. With six cylinders and displacements stepping from the compact FKX50/660K through 775K, 830K and 980K, the family covers everything from heavy coaches to the largest intercity and tourist coaches.
This page covers the two members most requested by our aftermarket customers: the FKX50/655K (compact end) and the FKX50/830K (the 831cc workhorse). Both are available new and remanufactured from Hunan Weili.
BOCK FKX50 Series – 6-Cylinder Bus AC Compressor
FKX50 Family Line-Up
FKX50/660K |
Compact displacement member of the family |
FKX50/655K |
Compact 6-cylinder member (this page) – exact rating per nameplate |
FKX50/775K |
Mid-family displacement, heavy coaches |
FKX50/830K |
831 cm³, Ø 60 mm pistons (this page) |
FKX50/980K |
Largest member, Ø 65 mm pistons, ~42 kg |
Family note: pistons, connecting rods and valve plates are shared across members where the bore matches – one service philosophy, one parts source.
FKX50/830K Deep-Dive
Model |
BOCK FKX50/830K |
|
Design |
Open-drive reciprocating, K valve-plate system |
|
Cylinders |
6 |
|
Displacement |
831 cm³ / rev |
|
Piston diameter |
Ø 60 mm (set piston FK50/830K) |
|
Refrigerant |
R134a |
|
Voltage |
24V DC clutch |
|
OEM spare parts |
Full BOCK parts list available (oil pump 40195, connecting-rod set 80090, decompression valve 07940, etc.) |
|
 |
 |
| FKX50 Series – Unit View | FKX50 Series – Drive End |
FKX50/655K Deep-Dive
The FKX50/655K is the compact six-cylinder member of the family, specified by our customers for heavy coaches where 6-cylinder smoothness is wanted without the full 830K capacity. Core family characteristics apply – K valve-plate system, open-drive design, R134a compatibility, 24V clutch options. Exact nameplate rating and dimensions are confirmed per unit before dispatch; send us your OEM number for a cross-reference.
FKX50 Family Compressor (775K shown – same platform)
Where FKX50 Compressors Work
Quality & Warranty
FKX50 Series – Detail View
FKX50 Series – Connection End
BOCK FKX50 – Frequently Asked Questions
Q: Is 655K the same as 660K? A: The family is most commonly catalogued as 660K; 655K refers to the same compact member in some aftermarket references. We confirm the exact rating on your unit before dispatch.
Q: How many cylinders does the FKX50 have? A: Six – the FKX50 is the 6-cylinder family; the FKX40 is the 4-cylinder family.
Q: What refrigerant? A: R134a as standard.
Q: New or remanufactured? A: Both available for 830K; availability of new 655K units confirmed per order.
Q: Can you supply spare parts? A: Yes – full BOCK FKX50 parts list, including pistons, valve plates, gaskets and clutches.
Contact & Ordering
Hunan Weili Auto Parts Appliance Co., Ltd
