The Radiator Hose Set for Toyota 12R Engine is a complete cooling system hose assembly comprising both the upper radiator hose and lower radiator hose. Designed and manufactured to Toyota OEM specifications, this set ensures efficient coolant transfer through the engine and radiator, helping maintain optimal engine temperature—even under heavy load or hot operating conditions.
By combining both the upper and lower hoses in one set, this product is ideal for full cooling system servicing, preventive maintenance, or overhaul projects.
Included OEM Part Numbers
Upper Radiator Hose:
- 16572-31021
- 16572-31022
- 16572-31023
Lower Radiator Hose:
These part numbers represent OEM-matched variants based on vehicle model, year, and specific routing in Toyota cooling systems using the 12R engine.
Vehicle Model Application
This radiator hose set is designed for Toyota vehicles powered by the 12R petrol engine, including:
- Toyota Corolla (12R petrol variants)
- Toyota Celica (12R petrol variants)
- Toyota Corona / Mark II (12R petrol variants)
- Toyota Hilux / Pickup (older 12R petrol versions)
- Toyota LiteAce / TownAce (select 12R petrol configurations)
Final fitment depends on model year, cooling layout, and accessory arrangement. Always confirm the correct OEM hose number with your vehicle VIN or parts fiche before installation.
Technical Specifications
Upper Radiator Hose (16572-31021 / 16572-31022 / 16572-31023)
- Connects radiator upper outlet to engine thermostat housing / water outlet
- Designed with engineered curves to match factory routing
Lower Radiator Hose (16572-31010 / 16572-31011)
- Connects radiator lower outlet to engine water pump inlet
- Built with precise bends to ensure smooth coolant flow
Common Attributes
- Material: High-grade, heat-resistant rubber compound
- Reinforcement: Multi-layer woven synthetic fabric to resist pressure
- Finish: Smooth internal bore for unhindered coolant circulation
- Connection: OEM-style bead ends suitable for secure clamp fit
- Temperature Resistance: Rated for repeated thermal cycling in engine environment
Function & Application
- Ensures continuous coolant circulation between the engine and radiator
- Supports effective heat dissipation under varying operating conditions
- Helps regulate engine temperature, improving performance and durability
- Works together with thermostat, water pump, and radiator for balanced cooling
Performance Benefits
- OEM-matched fit and routing for correct hose alignment
- High resistance to heat, coolant chemical exposure, vibration, and aging
- Durable construction reduces risk of cracking, swelling, and leakage
- Full set replacement ensures balanced cooling system performance
Installation & Service Notes
- Confirm correct OEM number with vehicle parts fiche or VIN
- Inspect hose clamps and radiator/engine necks before fitment
- Recommended to replace both hoses simultaneously during cooling system servicing
- Proper routing and installation help prevent premature wear
Replacement Recommendations
Replace the radiator hose set when:
- Soft spots, cracks, or bulges develop
- Coolant leakage is seen at hose ends or clamp points
- Hoses are aged, hardened, or show swelling
- Cooling system components (e.g., water pump, thermostat) are serviced
Prompt replacement ensures efficient cooling performance, reduced engine stress, and prolonged engine life.
Why Choose VINSON
Choosing VINSON ensures OEM-matched quality, precise fitment, and long-lasting performance—helping prevent coolant leaks, reduce engine overheating risk, and minimize cooling system maintenance costs.
Description provided by vinson industries.
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