The Honda 14451-Z4M-000 Rocker Arm Pivot is a genuine OEM component designed for an exceptionally wide range of Honda equipment, including GX120, GX160, GX200, GX240, GX270, GX340, GX390, GX610, GX620, and GX670 horizontal shaft engines; GXV120, GXV140, GXV160, GXV340, GXV390, GXV610, GXV620, and GXV670 vertical shaft engines; EB, EG, EM, EN, EP, EU, EW, EX, and EZ series generators; F401, F501, FC600, FR600, FR650, FR750, FR800, and FRC800 tillers; HR195, HR215, HRA215, HRB215, HRC215, HRC216, HRC7013, HRC7113, HRM195, and HRM215 lawn mowers; HS521, HS522, HS621, HS622, HS624, HS724, HS828, HS928, HSM1336, HSS1332, HSS724, and HSS928 snow blowers; H1011, H2013, H2113, H3011, H3013, H4013, H5013, and RT5000 tractors and riding mowers; WB20, WB30, WD20, WD30, WDP20, WDP30, WH15, WH20, WMP20, WP20, WP30, WT20, WT30, and WT40 water pumps; the HP400 power carrier; and BF5 and BF50 outboard motors. As a genuine Honda OEM part, it is manufactured to the same specification as the original, ensuring a direct, no-guesswork replacement. Because Honda supersedes parts across serial number breaks, always confirm this part number against your machine's serial number before ordering.
Key Features
- Genuine Honda OEM Valvetrain Precision — sourced directly from Honda, this pivot is manufactured to the exact geometry the rocker arm requires to maintain correct valve lift and timing across its full operating range.
- Direct OEM Replacement — replaces the original pivot without modification, restoring the rocker arm's range of motion exactly as Honda designed it.
- Exceptionally Broad Fitment — covers horizontal and vertical shaft engines, generators, tillers, lawn mowers, snow blowers, tractors, water pumps, and outboard motors across dozens of Honda model lines, including GX-series and GXV-series engines.
- Serial Number Verification Recommended — Honda updates part numbers at defined serial breaks; check your machine's serial number against the fitment table to confirm this is the correct pivot for your unit.
- Valvetrain Reliability — a worn or damaged pivot causes erratic rocker arm movement, leading to uneven valve actuation, loss of compression, rough running, and accelerated wear on the rocker arm and valve stem.
The rocker arm pivot is the fixed fulcrum pin on which the rocker arm rotates as it translates camshaft motion into valve opening and closing. Each time the camshaft lobe pushes one end of the rocker arm, the pivot transfers that force to lift the valve on the opposite end, admitting the air-fuel charge or releasing exhaust gases at precisely the right moment in the combustion cycle. When the pivot wears, develops play, or fails, the rocker arm loses its stable center point — valve timing becomes inconsistent, compression drops, and the engine may idle roughly, lack power, or fail to start altogether. Replacing this pivot with the correct genuine OEM part restores the precise fulcrum geometry Honda's valvetrain depends on.
Part Details
| Part Number | 14451-Z4M-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Rocker Arm Pivot |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Commercial Mower | HRC7013, HRC7113 | All |
| Diaphragm Water Pump | WDP20, WDP30 | All |
| Generator | EG4000 | 1230497-9999999 |
| Generator | EM3800, EM4000, EM6500 | 1562326-9999999 |
| Generator | EX4500 | 2177364-9999999 |
| Generator | EB3500, EG3500, EM3500, EX3300 | 3143191-9999999 |
| Generator | EZ1400, EZ2500 | 4252174-9999999 |
| Generator | EB2500, EB3000, EB3800, EB4000, EB5000, EB6500, EB11000, EG1400, EG2200, EG2500, EG5000, EG6500, EM1600, EM1800, EM2200, EM2500, EM3000, EM5000, EM6000, EN3500, EN5000, EP2500, EZ3500, EZ5000 | All |
| Horizontal Shaft Engine | GX120, GX160, GX200, GX240, GX270, GX340, GX390, GX610, GX620, GX670 | All |
| Inverter Generator | EB2200, EB7000, EM7000, EU3000, EU6500, EU7000 | All |
| Lawn Mower | HRA215, HRC215 | 1315994-9999999 |
| Lawn Mower | HR195, HR215, HRB215, HRC216, HRM195, HRM215 | All |
| Lawn Tractor | H4013 | 2018642-9999999 |
| Lawn Tractor | H2013, H2113 | All |
| Multi-Purpose Tractor | H5013, RT5000 | All |
| Outboard Motor | BF50 | All |
| Portable Outboard Motor | BF5 | All |
| Power Carrier | HP400 | 2450339-9999999 |
| Riding Mower | H3011, H3013 | 2054424-9999999 |
| Riding Mower | H1011 | All |
| Single-Stage Snow Blower | HS521, HS621 | All |
| Tiller | FR600, FR800 | 3143191-9999999 |
| Tiller | F401, F501, FC600, FR650, FR750, FRC800 | All |
| Two-Stage Snow Blower | HS828 | 3143191-9999999 |
| Two-Stage Snow Blower | HS522, HS622, HS624, HS724, HS928, HS1132, HS1332, HS1336, HSM1336, HSS724, HSS928, HSS1332 | All |
| Vertical Shaft Engine | GXV120 | 2450339-9999999 |
| Vertical Shaft Engine | GXV140, GXV160, GXV340, GXV390, GXV610, GXV620, GXV670 | All |
| Water Pump | WP20, WP30 | 4252174-9999999 |
| Water Pump | WB20, WB30, WD20, WD30, WH15, WH20, WMP20, WT20, WT30, WT40 | All |
| Welder Generator | EW171 | 2177364-9999999 |
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.
