RedPart RP420F-P5 Engine 12HP - 15HP Replaces Honda GX390 1" (25.4mm) Parallel Shaft Recoil Start

RedPart RP420F-P5 Engine 12HP - 15HP
Replaces Honda GX390 1" (25.4mm) Parallel Shaft Recoil Start
Powerful 420cc petrol engine powered by Loncin, designed as a direct replacement for Honda GX390, GX420 & Loncin RP420 Engines. Built with a 1" (25.4mm) parallel shaft and recoil start system for dependable heavy-duty machinery performance.
  • 12HP – 15HP / 420cc petrol engine
  • 1" (25.4mm) parallel horizontal shaft
  • Recoil start system
  • Direct replacement for Honda GX390 Engine
  • Loncin-powered heavy-duty engine
RedPart RP420F-P5 Engine 12HP - 15HP | Replaces Honda GX390 | 1" (25.4mm) Parallel Shaft | Recoil Start
SKU:
RP420F-P5
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ex VAT

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  • 45‑day returns policy

The RedPart RP420F-P5 is a powerful petrol engine powered by Loncin based on the Loncin G420F, designed as a direct replacement for the Honda GX390 Engine. It delivers dependable performance for heavy-duty machinery applications, with recoil starting and low-maintenance operation.

Core Specifications

  • Power Output: 12HP – 15HP (9.0–11.2 kW @ 3600 rpm)
  • Displacement: 420 cc
  • Shaft: 1" (25.4mm) parallel horizontal
  • Starting System: recoil start
  • Torque: 26.5 Nm @ 2500 rpm

Engine Details

  • Bore × Stroke: 90 × 66 mm
  • Compression Ratio: 8.3 : 1
  • Idle Speed: 1450 ± 150 rpm

Fuel & Lubrication

  • Oil Capacity: 1.1 L
  • Fuel Consumption: 374 g/kWh
  • Oil Consumption: 6.8 g/kWh

Features:

  • Direct replacement for Honda GX390 Engine
  • Heavy-duty industrial petrol engine
  • Loncin-powered for reliable performance
  • 1" (25.4mm) parallel shaft configuration
  • Recoil start system


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