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551699 Heater Hose Bypass Kit for LS/LT Engines - 5/8" & 3/4" Coolant Connector with (2) Clamps - Compatible with Chevrolet Silverado, GMC Sierra, Pontiac (LS1, LS2, LS3, LM7, LQ4, LQ9, LY6, etc.) in Kuwait 551699 Heater Hose Bypass Kit for LS/LT Engines - 5/8" & 3/4" Coolant Connector with (2) Clamps - Compatible with Chevrolet Silverado, GMC Sierra, Pontiac (LS1, LS2, LS3, LM7, LQ4, LQ9, LY6, etc.) in Kuwait 551699 Heater Hose Bypass Kit for LS/LT Engines - 5/8" & 3/4" Coolant Connector with (2) Clamps - Compatible with Chevrolet Silverado, GMC Sierra, Pontiac (LS1, LS2, LS3, LM7, LQ4, LQ9, LY6, etc.) in Kuwait 551699 Heater Hose Bypass Kit for LS/LT Engines - 5/8" & 3/4" Coolant Connector with (2) Clamps - Compatible with Chevrolet Silverado, GMC Sierra, Pontiac (LS1, LS2, LS3, LM7, LQ4, LQ9, LY6, etc.) in Kuwait 551699 Heater Hose Bypass Kit for LS/LT Engines - 5/8" & 3/4" Coolant Connector with (2) Clamps - Compatible with Chevrolet Silverado, GMC Sierra, Pontiac (LS1, LS2, LS3, LM7, LQ4, LQ9, LY6, etc.) in Kuwait 551699 Heater Hose Bypass Kit for LS/LT Engines - 5/8" & 3/4" Coolant Connector with (2) Clamps - Compatible with Chevrolet Silverado, GMC Sierra, Pontiac (LS1, LS2, LS3, LM7, LQ4, LQ9, LY6, etc.) in Kuwait 551699 Heater Hose Bypass Kit for LS/LT Engines - 5/8" & 3/4" Coolant Connector with (2) Clamps - Compatible with Chevrolet Silverado, GMC Sierra, Pontiac (LS1, LS2, LS3, LM7, LQ4, LQ9, LY6, etc.) in Kuwait

551699 Heater Hose Bypass Kit for LS/LT Engines - 5/8" & 3/4" Coolant Connector with (2) Clamps - Compatible with Chevrolet Silverado, GMC Sierra, Pontiac (LS1, LS2, LS3, LM7, LQ4, LQ9, LY6, etc.)

KWD 3
KWD 4
Brand
DONFON
Weight
46 g
– 1 +

Special Features

  • PRECISE ENGINE FITMENT: Direct replacement heater core bypass hose designed exclusively for GM LS/LT series engines (2000-2020 models), ensuring leak-free coolant flow between 5/8" and 3/4" ports.
  • DURABLE CONSTRUCTION: OEM-spec reinforced rubber withstands 250°F+ temperatures, ethylene glycol coolant, and engine vibration, preventing cracks & premature failure.
  • COMPLETE INSTALLATION KIT: Includes (2) heavy-gauge stainless steel clamps with corrosion-resistant coating for secure, permanent sealing right out of the box.
  • VEHICLE COMPATIBILITY: Verified fit for Chevrolet Silverado, Tahoe; GMC Sierra, Yukon; Pontiac GTO; Cadillac Escalade with LS1, LS2, LS3, LM7, LQ4, LQ9, LY6, L92, L94, L99, and 25+ other LS/LT variants.
  • RESTORE COOLING SYSTEM PERFORMANCE: Eliminates air pockets and maintains optimal coolant circulation to prevent overheating, protecting your engine's longevity

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