Product Description
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The Briggs & Stratton 31R5070012B5CC0001 – 4155 Intek OHV Vertical Crankshaft Engine is a powerful, reliable, and highly durable replacement engine designed for customers who expect long service life and consistent performance from their outdoor power equipment. Engineered with Briggs & Stratton’s trusted Intek OHV technology, this 15.5 HP unit offers a balanced mix of strength, efficiency, and low-maintenance operation—making it a dependable upgrade for lawn tractors, garden machinery, and a wide range of vertical-shaft applications.
Engineered for Performance and Longevity
At the heart of the 4155 Intek OHV series is a 501cc single-cylinder engine built with a cast-iron cylinder sleeve, delivering superior wear resistance and long-term reliability even under heavy workloads. Its OHV (Overhead Valve) design enhances airflow, promotes cleaner combustion, and improves fuel economy, allowing the engine to run cooler and more efficiently throughout extended periods of use.
The engine delivers 15.5 HP, (gross), with strong low-end torque—ideal for cutting through dense grass, powering attachments, and supporting demanding tasks without strain. Its heavy flywheel improves stability, ensuring smoother operation and reduced vibration, while built-in anti-vibration measures further enhance comfort for both the machine and the operator.
Built for Easy Starting and Smooth Operation
This model comes equipped with an electric starter, ensuring dependable ignition in all seasons without the effort required from manual recoil systems. A 9-amp charging system keeps the battery supported during operation, making the engine well-suited for equipment that features electric PTO clutches, headlights, or other battery-powered accessories.
Additionally, a fuel pump is included to maintain reliable fuel delivery, particularly useful on machines with remote or low-mounted fuel tanks.
Solid Construction for Demanding Environments
Briggs & Stratton designed this engine to withstand tough, real-world conditions. The cast-iron sleeve protects against scoring and thermal wear, while splash lubrication keeps the internal components properly oiled during operation. With an oil capacity of approximately 1.3 litres, routine maintenance is straightforward and cost-effective.
This model features a 1" (25.4mm) straight vertical crankshaft with a length of 3.15" (80.19mm)—a widely used specification compatible with many popular lawn tractors and other outdoor machinery. This makes the engine a versatile replacement option for both older and newer models.
Ideal Replacement for a Wide Range of Applications
The 31R5070012B5CC0001 offers excellent compatibility across multiple applications. Whether you’re restoring an older mower, upgrading a tired engine, or ensuring your commercial equipment remains reliable during peak usage, this unit provides a high-value solution backed by Briggs & Stratton’s global reputation.
To make installation and commissioning even easier, free engine oil is included—everything you need to get up and running quickly and correctly.
Why Choose This Engine?
- Reliable 15.5 HP performance ideal for lawn tractors and garden machinery.
- Cast-iron sleeve for exceptional durability.
- Electric start for ease of use.
- Fuel pump and 9-amp charging system for dependable operation.
- Vertical 1" diameter crankshaft compatible with many OEM models.
- Intek OHV technology for improved power, cooler running, and better fuel efficiency.
- Backed by Briggs & Stratton engineering—a trusted name in small engines worldwide.
A Smart Investment for Long-Term Value
Purchasing a genuine Briggs & Stratton replacement engine ensures you are getting the quality, engineering excellence, and part compatibility that aftermarket substitutes simply cannot match. The 4155 Intek OHV vertical crankshaft engine is built for longevity, engineered for efficiency, and designed to provide years of dependable service—making it an ideal choice for both homeowners and professional groundskeepers.
Specification
Series: 4155 Intek OHV
Cylinder/s: Single
Cylinder type: Cast Iron Sleeved
Power: 15.5 HP /11.4 kW Gross* (26.71 Nm @ 3600 rpm**)
Capacity: 501 cm³/cc
Fuel type: Petrol
Cooling system type: Air
Crankshaft position: Vertical
Crankshaft type: Straight
Crankshaft diameter: 1” (25.4 mm)
Crankshaft length: 3.15” (80.19 mm)
Flywheel type: Heavy
Anti-vibration system: Yes
Top No Load rpm: 2800 +/- 100
Charging system: 9 Amp
Recoil starter: No
Electric starter: Yes
Fuel pump: Yes
Oil filter: No (Splash lubrication)
Low oil cut off: No
Muffler: No
Fuel tank: No
Oil capacity: 1.3 ltr (Approx.)*
Replaces: 31R5070011B5
* Approximately
** All torque levels are stated gross Nm per SAE J1940 as rated by Briggs & Stratton.
FREE Engine Oil to commission the engine is included.
Always read owners manual prior to commissioning engine. Damage caused by improper installation are not warrantable.
Shipping restrictions may apply. Please contact us for confirmation if the required delivery destination is outside of the UK.
IMPORTANT NOTE: If you are not completely sure that this engine will suit your intended application, please contact us with your original engine details first, (in the case of Briggs, the Model, Type and Code numbers). One of our Briggs trained staff will then be able to confirm whether this engine is suitable, and if not, assist with identification of the correct engine for your requirements.
01747 356048
