The Most Common Sourcing Error: Why “Visually Similar” ZF Basicpower Clutch Discs Are Not Interchangeable
The Most Common Sourcing Error: Why “Visually Similar” ZF Basicpower Clutch Discs Are Not Interchangeable
Introduction: A Costly Point of Confusion
In the global ZF parts market, a critical and expensive mistake is assuming all “Basicpower” transmissions are identical. The German-designed ZF 4BP230 and the Liuzhou ZF (LZZF) Basicpower series (common in Chinese OEMs) use different internal components and, crucially, different naming conventions for their clutch packs.
Ordering the wrong clutch kit based on visual similarity will halt your repair and lead to costly returns. As a 20-year technical specialist in both German and Chinese ZF systems, Tianjin XiaoHang Construction Machinery Co., Ltd. clarifies this vital distinction to protect your procurement accuracy.
German (Passau) Standard: The “K-Clutch” System (K1, K2, KV…)
When international distributors order parts using the official German ZF Parts Catalog (like the one for 4BP230 BOM 4681.084.018), the 6 clutches are designated by “K” (from the German Kupplung, meaning Clutch):
- KV (Forward Direction)
- KR (Reverse Direction)
- K1, K2, K3, K4 (Speed Clutches)
These clutches have specific part numbers (e.g., K1 Repair Kit 4681.298.014) and precise dimensions, which are standard for this specific Bill of Material (BOM).
The Liuzhou (LZZF) Standard: The “C-Clutch” System (CA, CB, CF…)
Conversely, the Liuzhou-produced Basicpower (BP LZZF) transmissions, frequently found in major Chinese OEM equipment, use a “C” nomenclature for their 6 clutches:
- CF, CG (Forward Direction)
- CR (Reverse Direction)
- CA, CB, CC (Speed Clutches)
Crucially, the internal dimensions are different. Our technical data and repair experience confirm this:
- Example 1 (Clutch “CA” vs “K1”): The Passau (German) CA clutch often uses a friction surface diameter of D166.5mm. The LZZF CA clutch, however, may use a D148.8mm diameter.
- Example 2 (Clutch “CB” vs “K2”): The Passau CB clutch uses D148.8mm discs. The LZZF CB clutch often uses significantly smaller D128.0mm discs.
Why This Matters to Your Procurement: Do Not Order a K1 Kit for a CA Clutch
A repair kit for a German-spec K1 clutch will not fit the shaft, drum, or piston of an LZZF-spec CA clutch, even if they both function as the “1st gear” clutch. This dimensional difference is the single most common reason for incorrect parts being shipped internationally.
Tianjin XiaoHang Construction Machinery Co., Ltd. possesses the 20 years of repair and supply expertise to identify which system your transmission uses. We do not just match part numbers; we verify your transmission’s BOM (Parts List No.) before we ship to guarantee you receive the correct, dimensionally accurate components.
Conclusion: Stop Guessing and Avoid Costly Returns
Trust the 20-year expertise of XiaoHang Machinery Co. to navigate the complex differences between the German (K-Clutch) and Liuzhou (C-Clutch) systems. We ensure you get the right part, the first time.
| Contact Detail | Information |
| Sales Representative | Tony Chang |
| Trading Entity | TIANJIN LINKWORLD TRADING CO. LTD |
| Direct Contact (Phone/WhatsApp) | +86 15822863467 |
| 5858518@gmail.com | |
| Expertise Provided by | Tianjin XiaoHang Construction Machinery Co., Ltd. |