Acura CL7/CL9 TSX Lower Radiator Hose 19505-RBA-000

Acura CL7/CL9 TSX Lower Radiator Hose - 19505-RBA-000

Got coolant leaking from your lower radiator hose on your TSX? Your factory radiator hose's probably cracked or the rubber's soft and swollen. The Acura TSX lower radiator hose (part number 19505-RBA-000) connects your radiator's lower neck to your thermostat housing. When the hose gets old, the rubber hardens and cracks, or it gets soft and swells from heat. Either way, it leaks coolant. If your lower radiator hose is leaking, bulging, or it's soft when you squeeze it, replace it before it splits and leaves you stranded.

Here's Why Your Radiator Hose Fails

Your radiator hose sits next to your engine where it's exposed to constant heat cycles. Every time your engine heats up and cools down, the rubber expands and contracts. After 10-15 years, the rubber gets hard and brittle, or it gets soft and swollen. Once the rubber's degraded, the hose starts leaking at the connections or it develops cracks. If the hose is swollen and soft, it can collapse under vacuum when your engine's cooling down, which restricts coolant flow and causes overheating. Replace your radiator hoses before they fail.

EPDM Rubber Construction

This radiator hose is made from EPDM rubber. EPDM rubber handles heat and coolant better than cheap rubber hoses. It doesn't degrade as quickly from heat cycles and it doesn't swell from coolant exposure. You're getting a factory-spec hose that'll last as long as your original hose did.

Upper Hose Sold Separately

This is the lower radiator hose only. The upper radiator hose is sold separately. If your upper hose is old too, replace both hoses at the same time. You've already got your coolant drained, so you might as well do both hoses while you're in there. You can find the upper radiator hose here, OHA-19501-RBB-000. 

What You Get

• Acura TSX lower radiator hose
• Part number: 19505-RBA-000
• Genuine Acura OEM replacement
• EPDM rubber construction
• Connects radiator lower neck to thermostat housing
• Fits manual and automatic transmission

Fits Your Car

• 2004-2008 Acura TSX (CL7/CL9 chassis, manual and automatic)

Compatible Engines

• K24A2 (2004-2008 TSX)