Product Description
The DDP DDPLLY-50 is a 50-inch braided stainless steel diesel fuel line designed for custom fuel system upgrades or replacements on 2001–2005 GM 6.6L Duramax LB7 and LLY trucks. Built for high-performance applications, this line offers excellent durability, heat resistance, and pressure handling. Perfect for regulated return systems, custom filter installations, or CP3 conversion setups.
Vehicle Fitment:
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2001–2004 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax LB7
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2004.5–2005 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax LLY
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2001–2004 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LB7
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2004.5–2005 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LLY
Designed for custom use; not a direct OEM replacement line.
Specifications:
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Brand: DDP (Diesel Dealer Pros)
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Part Number: DDPLLY-50
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Length: 50 inches
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Construction: Braided stainless steel
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End Type: AN-style fittings (may vary)
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Fuel Compatibility: Diesel, ULSD, Biodiesel blends
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Pressure Rating: High-pressure capable
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Routing: Custom
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Made in: USA
Features & Benefits:
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Braided outer sheath resists abrasion, heat, and fuel pressure swell
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50" length is ideal for return line extensions, remote filter plumbing, or CP3 setups
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Compatible with DDP return blocks, CP3 kits, and aftermarket fuel systems
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Long-lasting and corrosion-resistant
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Easy to route in tight engine bays or along frame rails
Ideal For:
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Regulated return kits
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Remote filter or air/vacuum separator installs
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Upgraded fuel system plumbing
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Custom CP3 or dual CP3 feed/return setups
