The Wacker Neuson Lock Washer B4 is a genuine OEM Lock Washer B4 designed for Wacker Neuson G-Series portable and skid-mounted mobile generators and LTW light tower series. As a factory-sourced component, this lock washer is produced to exact Wacker Neuson specifications, ensuring it seats and functions correctly within the fastener assemblies it serves. This part fits an extensive range of G-Series generator models — including the G25, G50, G70, G85, G100, G120, G130, G150, G180, G230, G240, and G320 — as well as select LTW6K, LTW8K, and LTW20Z light towers and HSH hydronic surface heaters. Sourcing the correct OEM lock washer matters: an incorrect or worn washer can allow fasteners to loosen under vibration, leading to assembly instability on equipment that runs for extended periods.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to Wacker Neuson's exact B4 sizing specification, so the washer delivers the correct clamping load and bite without over-stressing the mating fastener or housing.
- Drop-In Fastener Replacement — Matches the original inner diameter, outer diameter, and tooth profile of the factory-installed lock washer, allowing straightforward swap-out during scheduled maintenance or repair.
- Broad Generator and Light Tower Coverage — Fits G25 through G320 skid-mounted and mobile generator variants, LTW6K, LTW8K, and LTW20Z series light towers, and select HSH hydronic surface heater models.
- Vibration Resistance Where It Counts — Generators and light towers run for long, continuous duty cycles. The serrated profile of a correctly spec'd lock washer resists fastener back-out caused by engine and mechanical vibration over time.
- Verified OEM Part Number — Ordered and stocked under Wacker Neuson part number 5000010655, eliminating guesswork when cross-referencing service manuals or parts diagrams.
A lock washer is a hardened fastening component placed beneath a bolt or nut to prevent the fastener from loosening due to vibration, torque cycling, or thermal expansion and contraction. On generator sets and light towers — which operate under sustained mechanical vibration from the engine and alternator — properly torqued fasteners backed by the correct lock washer are essential to keeping panels, enclosures, and internal assemblies secure. When a lock washer becomes deformed, corroded, or is substituted with an incorrect size, the fastener it supports can gradually back out, potentially causing loose connections, structural play, or component damage over time.
Part Details
| Part Number | 5000010655 |
|---|---|
| Old Part Number | 0010655 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Washer B4 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Skid-mounted Mobile Generator, Custom | G70 | 5000620352, 5000620351, 5000009468, 5000620002, 5000620648, 5000620647, 5000620711, 5000620646, 5200001318, 5200003220, 5200006879, 5200003975, 5200003974, 5200014464, 5200014465, 5200008344, 5200008342, 5200008343, 5200008339, 5200008341, 5200008719, 5200023227, 5200008340, 5200023228, 5100025814, 5100025838, 5100042497, 5100042498 |
| Skid-mounted Mobile Generator | G50 | 5000009467, 5000620001, 5200001062, 5200001063, 5200006878, 5200001317, 5200001061, 5200014322, 5200014320, 5200017829, 5200017830, 5000620710, 5100045494, 5000620964, 5000620965, 5000620966, 5100042431, 5100045493, 5100042432, 5100025812, 5100029210, 5100026955, 5100026956 |
| Mobile Generator, Custom | G25 | 5000620346, 5000620345, 5000620642, 5000009466, 5000620004, 5000620709, 5000620641, 5200003991, 5000620931, 5200001316, 5200009372, 5200009371, 5200014461, 5200009375, 5200009374, 5200014462, 5000621005, 5100017591, 5100022834, 5100041581, 5100041582, 5100045541, 5100045542, 5100042510, 5100042512, 5100042509, 5100025836, 5100042508 |
| Mobile Generator | G85 | 5000009459, 5000620003 |
| LTW20Z-1, LIGHT TOWER 60Hz, ISUZU, CUSTOM, T4i | LTW20Z1 | 5000620842, 5200004205, 5200004096, 5100051572, 5100051571, 5200014326, 5200018239, 5200023191, 5200024872, 5200014328 |
| G100-GENERATOR, SKID, CUSTOM, DEERE T3 | G100 | 5000620651, 5000620650, 5200001319, 5200003158, 5200006900, 5200003859, 5200003858, 5000620313, 5000620314, 5100045498, 5200008348, 5100045499, 5100045554, 5100045555, 5200008346, 5200008347, 5100033311, 5100049835, 5100033312, 5100025816, 5100026958, 5100026959, 5100029211 |
| G120-GENERATOR, SKID, CUSTOM, DEERE T3 | G120 | 5000620654, 5000620653, 5200001320, 5200006901, 5200003159, 5200003856, 5200003855, 5200014467, 5200014468, 5000620311, 5000620310, 5200008353, 5200008350, 5200008351, 5100025818, 5100025840 |
| G150-GENERATOR, SKID, CUSTOM, DEERE T3 | G150 | 5000620657, 5200001321, 5200006902, 5000620656, 5200003160, 5000620889, 5000620307, 5200007860, 5000620308, 5000620888, 5200023236, 5200010137, 5200023237, 5100045570, 5200025554, 5100049841, 5100026981, 5100026982, 5100029212, 5100025830 |
| G180-GENERATOR, SKID, CUSTOM, DEERE T3 | G180 | 5000620660, 5200001322, 5200006903, 5000620659, 5200003161, 5000620886, 5200007861, 5000620304, 5000620885, 5000620305, 5200010140, 5200014470, 5200010139, 5200014471, 5100015615, 5200025555, 5100045575, 5100045576, 5100045591, 5100045592, 5100049844, 5100025832, 5100025842 |
| G240-GENERATOR, SKID, CUSTOM, DEERE T3 | G240 | 5000620663, 5200001323, 5200006904, 5000620662, 5200003162, 5000620301, 5000620302, 5200025556, 5100025834 |
| LTW20Z-3, LIGHT TOWER 60Hz, ISUZU, CUSTOM, T4i | LTW20Z3 | 5000620843, 5200003583, 5200004097, 5200014327, 5200023192, 5200023604, 5200014329 |
| LTW6K Light Tower, Custom T4 | LTW6K | 5000620840, 5200004094, 5200024870 |
| LTW8K Light Tower, Custom T4 | LTW8K | 5000620841, 5200004204, 5200004095, 5200023190, 5200024871 |
| E1250S | E1250S | 5200012355, 5200012354 |
| G230 Generator, Custom T4i | G230 | 5000620883, 5000620882, 5200007862, 5200010142, 5200010143, 5100015614, 5100045596, 5100045597, 5100049846 |
| LTW20Z3-V S LIGHT TOWER, COLD WEATHER, T4i | LTW20Z3-V S | 5200018566, 5200018562, 5200023196, 5100015094, 5100022126 |
| E12540B | E1250B | 5200012353, 5200007613 |
| LTW20Z1-V S LIGHT TOWER, COLD WEATHER, T4i | LTW20Z1-V S | 5200018565, 5200018561, 5200024875, 5200023195, 5100015093, 5100022125 |
| LTW6K-V S Light Tower, Cold Weather T4 | LTW6K-V S | 5200018563, 5200018559, 5200024873 |
| LTW8K-V S Light Tower, Cold Weather T4 | LTW8K-V S | 5200018564, 5200023194, 5200018560, 5200024874, 5100015095, 5100022084 |
| G130 Generator, Cold Weather T4 | G130 | 5200023233, 5200023234, 5100045559, 5100045560, 5100045565, 5100045566, 5100049838 |
| Light Tower | LTW20Z3-V | 5200012881, 5200012885, 5200022694 |
| Light Tower | LTW6K-V | 5200012868, 5200012882 |
| Light Tower | LTW8K-V | 5200012869, 5200012883 |
| Light Tower | LTW20Z1-V | 5200012880, 5200012884 |
| G150 Generator,Hertz,T4 Final | G150 Generator,Hertz,T4 Final | 5100015616 |
| HSH380s | HSH 380S | 5100054643 |
| Mobile Generator | G320 | 5200008718, 5200010219, 5200010260, 5200010146, 5100045602, 5200008717, 5100018533, 5200010261 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371, 5200012370 |
| HSH380B-Diesel, without generator | HSH380B | 5200012359, 5200007614 |
| E.Breaker EH 24/115/200 | EH 24/115/200 | 5000007791 |
| El. Hammer EH 24/250/200 | EH 24/250/200 | 5000007792 |
| E.Breaker EH 22/230 | EH 22/220 | 5000007823 |
| E.Breaker EH 22/400 | EH 22/400 | 5000007824 |
| Electric Breaker w/25x108 shan k, 380V | EH 22/400 EE25x108 | 5000007825 |
| E.Breaker EHL 22/400 SSZ | EHL 22/400 WSZ | 5000007826 |
| E.Breaker EH 22/400 SSZ | EH 22/400 WSZ | 5000007848 |
| Reversible Vibratory Plate, 70 kN, 60cm/24in | DPU 7060 | 5000007938 |
| Reversible Vibratory Plate, 70 kN, Remote Controll | DPU 7060RC | 5000007939 |
| Electric Hammer EH 22/230 60Hz | EH 22/230 60Hz | 5000008610 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
