MiMi Auto Parts
HOSE W/BOTTLE TO THERMOSTAT/OIL COOLER, Arrowhead

HOSE W/BOTTLE TO THERMOSTAT/OIL COOLER

Brand: Arrowhead

SKU: 400800

Category: COOLING, RADIATOR HOSE

R1 370,80 incl. 15% VAT

✓ In stock, ships nationwide via The Courier Guy

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Fitment: Fits selected BMW models. Confirm exact fitment before ordering.

Product Description

This Arrowhead hose assembly is designed for the cooling system of select BMW models, serving as the connection between the expansion bottle, thermostat, and oil cooler. As a crucial cooling radiator hose, it ensures proper coolant flow between these key components, helping to regulate engine temperature and prevent overheating. The assembly features multiple molded branches and secure mounting tabs for a precise fit within the engine bay.

Fitment is specific to BMW vehicles, particularly certain E46 318i, ti, and Ci models equipped with N42 or N46 engines from the late 1990s to mid-2000s. Always confirm your BMW's model, year, engine size, and engine code before placing an order to ensure compatibility.

Common symptoms of a failing hose in this position include coolant leaks, visible cracks or swelling on the hose, engine overheating, low coolant warnings, and erratic temperature gauge readings. You may also notice coolant odours in the engine bay or reduced heater performance.

Replacement is recommended if you observe any signs of wear, leaks, or damage to the hose assembly. Timely replacement helps maintain the integrity of your BMW's cooling system and prevents potential engine damage due to overheating.

Order with confidence from MiMi Auto Parts. We offer nationwide delivery across South Africa and are committed to helping you find the correct cooling parts for your vehicle. Please double-check all vehicle details before purchasing.

Common signs this part may need replacement

  • Coolant leaks under the vehicle
  • Visible cracks, splits, or swelling on the hose
  • Engine overheating or running hotter than normal
  • Low coolant warning light
  • Erratic temperature gauge readings
  • Coolant smell in the engine bay
  • Reduced heater performance
  • Hose feels unusually soft or brittle
  • Air bubbles in the coolant reservoir

Typical replacement guidance

Replace this hose assembly at the first signs of leaks, cracks, or swelling, or during major cooling system maintenance. Regular inspection is important, as a failed hose can quickly lead to engine overheating or coolant loss.

Why timely replacement matters

Timely replacement of cooling radiator hoses prevents coolant leaks and overheating, protecting your engine from costly damage. Neglecting this part can lead to breakdowns and reduced vehicle reliability.

Vehicle Compatibility

This part is confirmed to fit the following vehicles:

  • BMW 3 (E46) 1997 – 2005 318 i (N42 B20 A|N46 B20 A|N46 B20 C) – 105 kW / 143 HP
  • BMW 3 Compact (E46) 2001 – 2004 318 ti (N42 B20 A|N46 B20 A) – 105 kW / 143 HP
  • BMW 3 Convertible (E46) 2000 – 2007 318 Ci (N42 B20 A|N46 B20 A) – 105 kW / 143 HP
  • BMW 3 Coupe (E46) 1998 – 2006 318 Ci (N42 B20 A) – 105 kW / 143 HP
  • BMW 3 Touring (E46) 1999 – 2005 318 i (N42 B20 A|N46 B20 A|N46 B20 C) – 105 kW / 143 HP

Fitment support

Not sure if this part fits your vehicle? Contact MiMi Auto Parts with your vehicle make, model, year, and engine code before ordering and we will help confirm fitment.

Installation note

Cooling system work involves draining and refilling coolant and may require specialised tools. Professional installation is recommended to ensure correct coolant mixture, bleeding of air from the system, and leak-free connections.

Frequently Asked Questions

What are the signs of a failing water pump?

Common signs may include coolant leaks near the front of the engine, engine overheating, a whining or grinding noise from the water pump area, or coolant loss without visible external leaks. Diagnosis should be confirmed before replacement.

Can I drive with a coolant leak?

Driving with a coolant leak is not recommended. Loss of coolant can lead to engine overheating and potentially serious engine damage. The vehicle should be inspected and the leak repaired before further driving.

Does this part fit my vehicle?

Please check the vehicle compatibility section on this page and confirm your vehicle make, model, year, engine size, and engine code before ordering. If you are unsure, contact MiMi Auto Parts before checkout.

Is the price VAT-inclusive?

Yes, product prices on MiMi Auto Parts are shown inclusive of VAT where applicable.

Do you deliver across South Africa?

Yes, MiMi Auto Parts delivers nationwide in South Africa. Delivery cost and estimated timing are calculated during checkout based on your location.

Is professional installation recommended?

Professional installation is recommended for safety-critical and technical parts such as airbag, clock spring, brakes, suspension, steering, clutch, cooling, engine, and electrical components. For guidance specific to this part, see the installation note on this page.

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