K-Series K20Z3 K24 Upper Coolant Thermostat Housing with Straight Elbow Filler Neck - Aluminium

Product Overview

This aluminium upper coolant thermostat housing features a straight elbow filler neck and is listed for Honda K-Series K20Z3 and K24 engines. It is a handy part for K-Series builds and swaps where the factory housing or filler location does not suit the radiator position, allowing a tidier coolant layout and easier filling.

Key Features and Benefits

• Upper coolant thermostat housing
• Straight elbow filler neck
• Aluminium construction
• Listed for K20Z3 and K24 engines
• Standard size

Vehicle Compatibility

The supplier lists K-Series K20Z3 and K24 engines, with a year field of 2017-2020 that does not clearly relate to these engines. Vehicle models are not named. Fitment is supplier-stated and must be confirmed for your engine and swap layout before ordering.

Product Specifications

• Product type: upper coolant thermostat housing
• Filler neck: straight elbow
• Material: aluminium
• Engine family: K-Series (K20Z3, K24)
• Packed size: 26 x 10 x 8 cm
• Packed weight: approximately 1.1 kg

Installation and Usage

Make sure the engine is fully cool before starting. Drain the coolant, remove the factory upper housing and clean the mating surface. Fit the new housing with a fresh seal and your thermostat, correctly oriented, then torque the bolts evenly. Reconnect hoses, refill with the correct coolant and bleed the system thoroughly. Run the engine to temperature and check for leaks.

Package Contents

Upper coolant housing with filler neck, as pictured. Whether a thermostat, cap or seals are included is not stated, so please confirm with us.

Important Fitment Notice

Please send us your VIN and engine details before ordering so we can help confirm fitment. Images are for reference only. Cooling system parts must be secure and leak-free to pass a Warrant of Fitness in New Zealand, and engine swaps may need Low Volume Vehicle certification. Please include your radiator type and hose layout when you contact us, so we can check the filler neck position will suit your build.