Water radiator bottom hose, Return RIGHT. Porsche 996 C2/C4 MANUAL › 99610662654

This OE Match right-hand radiator bottom return hose forms part of the coolant return circuit on Porsche 996 C2 and C4 models with manual transmission. It connects the lower radiator outlet to the return pipework.

Fits:

• Porsche 996 C2/ C4 1998–05
• Porsche 996 C2 3.4L 1997–08/01
• Porsche 996 C2 3.6L 09/01–2005
• Porsche 996 C4 3.4L 1997–08/01
• Porsche 996 C4 3.6L 09/01–2005

Check fitment for your specific vehicle (model, year, engine) before ordering.

What Is This Part?
This is the lower return hose for the right-hand radiator, rather than a hose at the rear-mounted engine. It forms one connection within the pipework linking the front radiator assembly with the rest of the cooling circuit. The hose and its adjoining connections must remain properly seated and sealed to retain coolant. When repairing a leak here, inspect the radiator connection and associated retaining hardware as well as the hose itself.

What Does This Part Do?

• Carries returning coolant: Provides a passage from the lower radiator connection into the return circuit.
• Connects cooling components: Joins the right-hand radiator to the adjoining coolant pipework.
• Completes the sealed coolant path: Works with its connections and retaining hardware to contain coolant within this section of the system.

Why Replace This Part?
Replace the hose when inspection confirms leakage, cracking, swelling, excessive hardening or abrasion damage. Heat exposure and deterioration can affect a coolant hose even where damage initially appears limited to the surface or the area near a connection. 

A replacement hose will not resolve a damaged radiator outlet or unsuitable retaining hardware. Check the adjoining parts during the repair so that the source of leakage is addressed rather than simply replacing the most visibly wet component.

When to Replace This Part?

• Cracks or splits: Inspect the hose body, bends and connection areas for visible deterioration. 
• Swelling or soft sections: Bulges or an unusually soft area warrant assessment for hose deterioration. 
• Hardening: A hardened hose with surface cracking may require replacement following inspection. 
• Rubbing damage: Renew a hose with significant abrasion and correct the contact that caused it. 
• Confirmed leakage: Fresh coolant, damp hose ends or dried residue around this connection should prompt a check of both the hose and its adjoining fittings.
• Damage during removal: Check the connection areas before refitting a hose disturbed during radiator work.

Where Is This Part Fitted?
Location: At the lower connection of the right-hand front radiator, within the radiator return-line assembly.

Technical Details

• Position: RIGHT, radiator bottom return.
• Transmission: MANUAL; application code M480.
• Engine identifiers: M96.01/02/03/04, subject to the vehicle applications above.

Product Summary

• Product: Right-hand radiator bottom return hose.
• Brand: OE Match.
• Part number: 99610662654.
• Purpose: Connects the lower right-hand radiator outlet to the coolant return pipework.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99610662654

The product you are viewing cross references to these numbers