2PCS Car Heater Hose Connector Replacement OEM#15055343 15055342,T-Coolant Hose Connector Compatible with GMC Chevrolet Cadillac,Waterproof Connectors for Heater Hose Fitting

Most coolant leaks are found by the smell — sweet, slightly hot, drifting through the vents long before a drip shows on the driveway — and a cracked heater hose connector is a common place for that smell to begin. This is a high-strength plastic replacement for part numbers OEM#15055343 and 15055342, measuring 4.81 by 1.86 by 1.21 inches, with one end at 0.93 inch diameter and the other at 0.68 inch.

Ten vehicles, two badges

The supplier's compatibility list runs to ten entries, every entry wearing either a Cadillac or a Chevrolet badge: three generations of Escalade on the Cadillac side, and Avalanche, Silverado 3500 and Suburban 1500 variants on the Chevrolet side, with the exact year spans printed in the features below. GMC is in the product title but not in this list, a gap dealt with further down.

Sealing is claimed at the joint, not rated on paper

The supplier credits fine workmanship and precise dimensions with a connection that is completely sealed against leakage, free of burrs and cracks, and resistant to working loose. A separate line says the plastic stands up to extreme temperature conditions and resists freezing and cracking, though no temperature figure backs it, and no pressure rating appears anywhere — worth pausing on for a component that sits inside a pressurised cooling circuit.

Key features

• Two stepped ends: 0.93 inch at one end and 0.68 inch at the other, so each hose seats on its own diameter.
• Moulded high-strength plastic: the supplier pairs low weight with resistance to breaking; no weight figure is stated.
• Cadillac coverage: 2002-2014 Escalade; 2004, 2006-2011, 2013-2014 Escalade ESV; 2002, 2004, 2006, 2008-2010, 2012-2013 Escalade EXT.
• Chevrolet coverage: 2007-2013 Avalanche; 2002-2006 Avalanche 1500; 2003-2006 Avalanche 2500; 2001-2006 Silverado 3500; 2007 Silverado 3500 Classic; 2007-2014 Silverado 3500 HD; 2000-2014 Suburban 1500.
• Joint-sealing claim: built to the original dimensions so the connection seals without leakage and resists dislodgement.
• Cold-weather line: said to prevent freezing and cracking in extreme conditions, with no figure attached.

Specifications

• Overall measurements: 4.81 x 1.86 x 1.21 inches (imperial only).
• End diameters: 0.93 inch and 0.68 inch.
• Connector body: high-strength plastic.
• Replaces part numbers: OEM#15055343, 15055342.

Where the title outruns the description

• The title and search snippet both name GMC; the description's ten entries are Cadillac and Chevrolet only, and those ten are the fitment printed here.
• Waterproof is claimed in the title and search snippet, never in the description, which credits the part with a sealed joint in service and nothing about water from outside; the lesser claim stands here.
• The title says 2PCS, but the description speaks of a single connector throughout and never gives a pack count, so we do not restate one.
• Direct fit is the search snippet's phrase; the description says only that it is designed according to the original dimensions.
• No pressure rating, no temperature figure and no standard is cited on this page for a cooling-circuit part.
• The supplier's sole warning is carried as written: "Please check the size data of the product you need before placing an order".

It is one of the few leaks you diagnose by nose: a part bought on the strength of a smell and confirmed against a ruler before any order is placed.

Returns, Refunds, and Replacements Products that are received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with the Australian Consumer Law (ACL). We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. However, please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.

Delivery Timeframe

Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows:

For customers in Victoria, approximately 7-10 working days; For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days; For customers in WA, NT, and TAS, approximately 9-12 working days.