HELI Z8510-120DZ 12V Reverse Buzzer for CPCD20-30 Forklift

The HELI Z8510-120DZ is an OEM-spec 12V DC reverse buzzer designed for HELI CPCD20, CPCD25, and CPCD30 diesel and LPG counterbalance forklifts in the H2000 series. When the transmission is shifted into reverse gear, this buzzer activates through the reverse light circuit to produce a 105dB warning tone — fulfilling the mandatory audible alarm requirement under OSHA 1910.178(n)(4) for powered industrial trucks operating in areas where pedestrians may be present. On HELI H2000 forklifts, the Z8510 buzzer is mounted on the rear chassis cross-member below the counterweight and is exposed to road spray, dust, and vibration from solid-tire operation on concrete surfaces — an environment that causes generic automotive-style buzzers to fail within 6-12 months from coil corrosion and diaphragm fatigue.

The Z8510-120DZ uses an electromagnetic coil-and-diaphragm design with a sealed steel housing and epoxy-potted coil winding that prevents moisture ingress — the primary failure mode of non-sealed buzzers. The acoustic chamber is tuned to 3.1 kHz for maximum penetration of ambient warehouse noise including forklift engine rumble, conveyor belt machinery, and loading dock impact sounds. The 2-pin waterproof connector matches the HELI H2000 factory wiring harness pinout exactly, enabling plug-and-play replacement without cutting, crimping, or adapting the original harness — a critical advantage during roadside inspections where modified wiring invites additional scrutiny.

Direct OEM replacement for HELI CPCD20 (2.0T), CPCD25 (2.5T), CPCD30 (3.0T / A30), and CPCD35 (3.5T / A35) H2000 series forklifts. Also cross-compatible with Hangcha CPCD20-35 models using the same mounting bracket footprint and 2-pin connector. For other safety equipment including strobe lights, laser zone projectors, and universal back alarms, browse our forklift buzzer and safety alarm category.

Technical Specifications

• OEM / Part Number: Z8510-120DZ (HELI)
• Type: Electromagnetic reverse buzzer
• System Voltage: 12V DC (nominal)
• Sound Output: 105dB at 1 meter
• Frequency: 3.1 kHz tuned resonator chamber
• Current Draw: 0.5A nominal
• Housing: Sealed steel with epoxy-potted coil
• Connector: 2-pin waterproof, HELI H2000 harness compatible
• Mounting: Rear chassis cross-member, 2-bolt M6 bracket
• Fitment: HELI CPCD20-35 H2000 series, Hangcha CPCD20-35
• Compliance: OSHA 1910.178(n)(4), ISO 3691
• Quality: OEM-spec direct replacement

Compatible Forklift Models

Each Z8510-120DZ buzzer ships with the mounting bracket pre-attached and M6 bolts. Before removing the failed OEM buzzer, check the reverse light circuit fuse — a blown fuse will cause both the reverse lights and the buzzer to fail simultaneously and is often misdiagnosed as a buzzer fault. After replacement, engage reverse gear with the key in the ON position (engine not running) to verify buzzer activation without engine noise masking the sound. For electrical system diagnostic procedures, consult Baldwin Filters. Kingstream stocks HELI Z8510-120DZ reverse buzzers for same-day dispatch — worldwide shipping with online tracking.