Shop Durmax Return Line Upgrade

Sponsored
About our ads
$39.83
GM 6.6L Duramax LLY, LBZ, LMM Fuel Injector Return Line Kit 2004-2010 | Bostech BD6301637
Bostech
$39.83
GM 6.6L Duramax LLY, LBZ, LMM Fuel Injector Return Line Kit 2004-2010 | Bostech BD6301637
Bostech
$44.99
Injector Return Line Kit For 2004.5-2010 Duramax LLY, LBZ And LMM. (1 Side) With Metal Fittings
Diesel Auto Power - July 7th 2025
$44.99
Injector Return Line Kit For 2004.5-2010 Duramax LLY, LBZ And LMM. (1 Side) With Metal Fittings
Diesel Auto Power - July 7th 2025
$33.13
Duramax Injector Return Line Kit 2004.5 - 2010 | IIDP
Industrial Injection Diesel Performance
$33.13
Duramax Injector Return Line Kit 2004.5 - 2010 | IIDP
Industrial Injection Diesel Performance
$38.95
Swag Performance Gm Lly / Lbz / Lmm Duramax Fuel Injector Return Line Kit
SWAGPERFORMANCEPARTS
1
Free shipping
$38.95
Swag Performance Gm Lly / Lbz / Lmm Duramax Fuel Injector Return Line Kit
SWAGPERFORMANCEPARTS
$150.85
GM 6.6L Duramax Ready To Install Left Fuel Return Line 2004-2010 | Bostech DEC010291
Bostech
$150.85
GM 6.6L Duramax Ready To Install Left Fuel Return Line 2004-2010 | Bostech DEC010291
Bostech
$160.17
GM 6.6L Duramax Ready To Install Right Fuel Return Line 2004-2010 | Bostech DEC010292
Bostech
$160.17
GM 6.6L Duramax Ready To Install Right Fuel Return Line 2004-2010 | Bostech DEC010292
Bostech
$3.90
LB7 Duramax Fuel Return Line Kit
Diesel Auto Power - July 7th 2025
$3.90
LB7 Duramax Fuel Return Line Kit
Diesel Auto Power - July 7th 2025
$339.98
2011-16 6.6L Duramax Fuel Injection Return Hose
Industrial Injection Diesel Performance
$339.98
2011-16 6.6L Duramax Fuel Injection Return Hose
Industrial Injection Diesel Performance
$86.95
Xdp Oer Series Fuel Return Line 2011 To 2016 6.6L Lml Duramax
Blessed Performance
$86.95
Xdp Oer Series Fuel Return Line 2011 To 2016 6.6L Lml Duramax
Blessed Performance
$22.29
97321375 Diesel Fuel Rail To Return Pipe For Duramax, Compatible With 2006-2009 6.6L LBZ LLY LMM Duramax Engines Hose
Amazon.com
$22.29
97321375 Diesel Fuel Rail To Return Pipe For Duramax, Compatible With 2006-2009 6.6L LBZ LLY LMM Duramax Engines Hose
Amazon.com
$120.00
2004-2010 CHEVT/GMC 6.6L DURAMAX LLY, LBZ, AND LMM LEFT & RIGHT-SIDE FUEL INJECTOR RETURN LINE KIT
Dieselogic
$120.00
2004-2010 CHEVT/GMC 6.6L DURAMAX LLY, LBZ, AND LMM LEFT & RIGHT-SIDE FUEL INJECTOR RETURN LINE KIT
Dieselogic
$50.88
2004-2010 Duramax 6.6L Diesel Truck Engines Fuel Injector Return Line Kit Generic
motorgenic.com
Free shipping
$50.88
2004-2010 Duramax 6.6L Diesel Truck Engines Fuel Injector Return Line Kit Generic
motorgenic.com
$175.00
2011-2016 6.6L GMC/CHEVY DURAMAX LML/LGH Bosch OEM Fuel Return Line Assembly
Dieselogic
$175.00
2011-2016 6.6L GMC/CHEVY DURAMAX LML/LGH Bosch OEM Fuel Return Line Assembly
Dieselogic
$6.50
LB7 2001-2004 GMC 6.6L Duramax Return Line Kit 5 Banjo Washers Only
Dieselogic
$6.50
LB7 2001-2004 GMC 6.6L Duramax Return Line Kit 5 Banjo Washers Only
Dieselogic
$23.67
04.5-10 GM 6.6L Duramax Dtech Injector Return Line Kit
Pure Diesel Power
$23.67
04.5-10 GM 6.6L Duramax Dtech Injector Return Line Kit
Pure Diesel Power
$133.80
04.5-10 GM 6.6L Duramax OEM Driver Side Fuel Injector Return Line
Pure Diesel Power
$133.80
04.5-10 GM 6.6L Duramax OEM Driver Side Fuel Injector Return Line
Pure Diesel Power
$29.99
Fuel Injector Return Line Kit With Metal Fittings, Direct Fit For 2004-2010 Chevy Silverado/GMC Sierra 2500HD/3500HD Duramax (LLY/LBZ/LMM) OEM
Amazon.com
6
$29.99
Fuel Injector Return Line Kit With Metal Fittings, Direct Fit For 2004-2010 Chevy Silverado/GMC Sierra 2500HD/3500HD Duramax (LLY/LBZ/LMM) OEM
Amazon.com
$118.91
17-26 GM 6.6L L5P Duramax GM Fuel Injector Fuel Return Line- Passenger Side
Pure Diesel Power
$118.91
17-26 GM 6.6L L5P Duramax GM Fuel Injector Fuel Return Line- Passenger Side
Pure Diesel Power
$160.17
Bostech Ready To Install RIGHT Fuel Return Line - 2004-2010 GM Duramax 6.6L | DEC010292
Thoroughbred Diesel
$160.17
Bostech Ready To Install RIGHT Fuel Return Line - 2004-2010 GM Duramax 6.6L | DEC010292
Thoroughbred Diesel
$64.38
04.5-10 GM 6.6L Duramax Injector Return Line Right
Pure Diesel Power
$64.38
04.5-10 GM 6.6L Duramax Injector Return Line Right
Pure Diesel Power
$104.00
2011-2016 GM 6.6L LML LGH Duramax Fuel Return Line Assembly
Pure Diesel Power
$104.00
2011-2016 GM 6.6L LML LGH Duramax Fuel Return Line Assembly
Pure Diesel Power
$21.37
Dtech Injector Return Line Kit - 04.5-10 GM Duramax - DT660023
Thoroughbred Diesel
$21.37
Dtech Injector Return Line Kit - 04.5-10 GM Duramax - DT660023
Thoroughbred Diesel
$28.59
Chevy Gmc Duramax 6.6L Injector Return Line Kit Lly, Lbz, Lmm - Dt
eBay
Free shipping
$28.59
Chevy Gmc Duramax 6.6L Injector Return Line Kit Lly, Lbz, Lmm - Dt
eBay
$77.67
04.5-10 GM 6.6L Duramax Dorman Turbo Oil Return Line
Pure Diesel Power
$77.67
04.5-10 GM 6.6L Duramax Dorman Turbo Oil Return Line
Pure Diesel Power
$9.11
Dtech DT660020 Fuel Return Line Kit - 2001-2004 GM 6.6L Duramax LB7
Thoroughbred Diesel
$9.11
Dtech DT660020 Fuel Return Line Kit - 2001-2004 GM 6.6L Duramax LB7
Thoroughbred Diesel
$95.00
2001-2004 Gm 6.6L Duramax Lb7 -Gm 97188733 Lb7 Fuel Return Line
SWAGPERFORMANCEPARTS
$95.00
2001-2004 Gm 6.6L Duramax Lb7 -Gm 97188733 Lb7 Fuel Return Line
SWAGPERFORMANCEPARTS
$150.85
Bostech Ready To Install LEFT Fuel Return Line - 2004-2010 GM Duramax 6.6L | DEC010291
Thoroughbred Diesel
$150.85
Bostech Ready To Install LEFT Fuel Return Line - 2004-2010 GM Duramax 6.6L | DEC010291
Thoroughbred Diesel
LB7 Duramax CP3 Replacement
11:12
LB7 Duramax CP3 Replacement
32.3K viewsApr 5, 2020
YouTubeRD Performance
Duramax LLY Injector Replacement
21:53
Duramax LLY Injector Replacement
98.8K viewsOct 14, 2018
YouTubeMrSubaru1387
Duramax Radiator Replacement
18:43
Duramax Radiator Replacement
60.7K viewsApr 10, 2020
YouTubeYou Break It You Fix It
LB7 Duramax Turbo Removal!
8:31
LB7 Duramax Turbo Removal!
41.4K viewsJun 16, 2019
YouTubeFixed Vane Duramax
6.6L Duramax Disassembly
32:27
6.6L Duramax Disassembly
247K viewsJan 11, 2018
YouTubeWhitt_Built
LBZ DURAMAX INJECTOR REMOVAL
13:57
LBZ DURAMAX INJECTOR REMOVAL
69.2K viewsApr 29, 2019
YouTubeRustbelt Mechanic
2004 Duramax Fuel Lines Replacement
2:37
2004 Duramax Fuel Lines Replacement
44.7K viewsFeb 22, 2020
YouTubePhillip Bailey
17:06
Chevy Duramax Hydroboost Replacement
78.8K viewsDec 20, 2020
YouTubeDown N Dirty Off-Road
25:46
LB7 DURAMAX INJECTOR RETURN LEAKS!!
60.7K viewsMar 3, 2018
YouTubeOptimal Welding
15:57
Duramax water pump Install
47.5K viewsMar 22, 2021
YouTubeTCM Outdoors
11:10
TIMING A DURAMAX ENGINE
45K viewsApr 8, 2019
YouTubeRD Performance
13:19
LB7 Injector Replacement for 2001-04 Duramax
225.7K viewsJan 6, 2019
YouTubeDEBOSS GARAGE
25:13
Duramax Y-Bridge Full Install (EGR Delete)
349.2K viewsDec 8, 2017
YouTubeTruck Master
19:16
DURAMAX LLY 2004 CP3 PUMP REPLACEMENT
70.5K viewsDec 18, 2020
YouTubeJosh “the artisan mechanic” Logan
6:57
Duramax Fuel Filter Delete Installation!
39.8K viewsMar 20, 2020
YouTubeFASS Diesel Fuel Systems
6:57
Duramax Injector pump CP3 removal requirements
147.9K viewsNov 7, 2015
YouTubeRancher 96
20:06
How to removing LB7 Duramax injectors
83.3K viewsDec 4, 2019
YouTubeMeanBee392
22:27
Duramax LLY - MBRP Down Pipe Installation
37.5K viewsJul 8, 2020
YouTubeMrSubaru1387
10:36
Duramax Fuel Rail Plug how to install
54.1K viewsJan 3, 2019
YouTubeCorey Lingren (Some.Oregon.Duramax)
23:20
Fuel Primer Pump Removal, Rebuild & Assembly - LLY Duramax
90.9K viewsDec 27, 2015
YouTubeMudRFunR
16:17
Duramax Fuel Pressure Regulator swap
87.3K viewsAug 13, 2019
YouTubeWyatt Curtis
2:27
How To Remove - LML Duramax Fuel Return Lines
92.9K viewsFeb 11, 2016
YouTubeToxic Diesel
15:00
LB7 Injector Diagnostic & Installation - 2001-2004 LB7 Duramax
121.7K viewsOct 8, 2018
YouTubeDmaxStore
19:20
REMOVING FUEL RESTRICTIONS FROM YOUR DURAMAX ENGINE!
78.2K viewsJan 26, 2021
YouTubeJordan Campbell
17:40
How to replace Duramax fuel injectors!
193.8K viewsAug 19, 2017
YouTubeThe Daily Drift
32:45
Duramax Full EGR Delete Install
597.7K viewsFeb 28, 2016
YouTubeTruck Master
2:48
How To Replace LBZ Duramax Fuel Filter (In 20 Minutes!)
39K viewsJan 29, 2020
YouTubeTom Canino
4:57
How To Install a LBZ/LMM Duramax Fuel Injection Pump
171K viewsOct 26, 2015
YouTubeToxic Diesel
30:39
How To: EGR Delete on LML Duramax STEP BY STEP
365.3K viewsJun 10, 2020
YouTubeDark Iron Diesel
9:10
LML Duramax oil pump replacement!
50.9K viewsJan 28, 2020
YouTubePurple Devils
See more

Shop Durmax Return Line Upgrade

Sponsored
About our ads
$39.83
GM 6.6L Duramax LLY, LBZ, LMM Fuel Injector Return Line Kit 2004-2010 | Bostech BD6301637
Bostech
$39.83
GM 6.6L Duramax LLY, LBZ, LMM Fuel Injector Return Line Kit 2004-2010 | Bostech BD6301637
Bostech
$44.99
Injector Return Line Kit For 2004.5-2010 Duramax LLY, LBZ And LMM. (1 Side) With Metal Fittings
Diesel Auto Power - July 7th 2025
$44.99
Injector Return Line Kit For 2004.5-2010 Duramax LLY, LBZ And LMM. (1 Side) With Metal Fittings
Diesel Auto Power - July 7th 2025
$33.13
Duramax Injector Return Line Kit 2004.5 - 2010 | IIDP
Industrial Injection Diesel Performance
$33.13
Duramax Injector Return Line Kit 2004.5 - 2010 | IIDP
Industrial Injection Diesel Performance
$38.95
Swag Performance Gm Lly / Lbz / Lmm Duramax Fuel Injector Return Line Kit
SWAGPERFORMANCEPARTS
1
Free shipping
$38.95
Swag Performance Gm Lly / Lbz / Lmm Duramax Fuel Injector Return Line Kit
SWAGPERFORMANCEPARTS
$150.85
GM 6.6L Duramax Ready To Install Left Fuel Return Line 2004-2010 | Bostech DEC010291
Bostech
$150.85
GM 6.6L Duramax Ready To Install Left Fuel Return Line 2004-2010 | Bostech DEC010291
Bostech
$160.17
GM 6.6L Duramax Ready To Install Right Fuel Return Line 2004-2010 | Bostech DEC010292
Bostech
$160.17
GM 6.6L Duramax Ready To Install Right Fuel Return Line 2004-2010 | Bostech DEC010292
Bostech
$3.90
LB7 Duramax Fuel Return Line Kit
Diesel Auto Power - July 7th 2025
$3.90
LB7 Duramax Fuel Return Line Kit
Diesel Auto Power - July 7th 2025
$339.98
2011-16 6.6L Duramax Fuel Injection Return Hose
Industrial Injection Diesel Performance
$339.98
2011-16 6.6L Duramax Fuel Injection Return Hose
Industrial Injection Diesel Performance
$86.95
Xdp Oer Series Fuel Return Line 2011 To 2016 6.6L Lml Duramax
Blessed Performance
$86.95
Xdp Oer Series Fuel Return Line 2011 To 2016 6.6L Lml Duramax
Blessed Performance
$22.29
97321375 Diesel Fuel Rail To Return Pipe For Duramax, Compatible With 2006-2009 6.6L LBZ LLY LMM Duramax Engines Hose
Amazon.com
$22.29
97321375 Diesel Fuel Rail To Return Pipe For Duramax, Compatible With 2006-2009 6.6L LBZ LLY LMM Duramax Engines Hose
Amazon.com
$120.00
2004-2010 CHEVT/GMC 6.6L DURAMAX LLY, LBZ, AND LMM LEFT & RIGHT-SIDE FUEL INJECTOR RETURN LINE KIT
Dieselogic
$120.00
2004-2010 CHEVT/GMC 6.6L DURAMAX LLY, LBZ, AND LMM LEFT & RIGHT-SIDE FUEL INJECTOR RETURN LINE KIT
Dieselogic
$50.88
2004-2010 Duramax 6.6L Diesel Truck Engines Fuel Injector Return Line Kit Generic
motorgenic.com
Free shipping
$50.88
2004-2010 Duramax 6.6L Diesel Truck Engines Fuel Injector Return Line Kit Generic
motorgenic.com
$175.00
2011-2016 6.6L GMC/CHEVY DURAMAX LML/LGH Bosch OEM Fuel Return Line Assembly
Dieselogic
$175.00
2011-2016 6.6L GMC/CHEVY DURAMAX LML/LGH Bosch OEM Fuel Return Line Assembly
Dieselogic
$6.50
LB7 2001-2004 GMC 6.6L Duramax Return Line Kit 5 Banjo Washers Only
Dieselogic
$6.50
LB7 2001-2004 GMC 6.6L Duramax Return Line Kit 5 Banjo Washers Only
Dieselogic
$23.67
04.5-10 GM 6.6L Duramax Dtech Injector Return Line Kit
Pure Diesel Power
$23.67
04.5-10 GM 6.6L Duramax Dtech Injector Return Line Kit
Pure Diesel Power
$133.80
04.5-10 GM 6.6L Duramax OEM Driver Side Fuel Injector Return Line
Pure Diesel Power
$133.80
04.5-10 GM 6.6L Duramax OEM Driver Side Fuel Injector Return Line
Pure Diesel Power
$29.99
Fuel Injector Return Line Kit With Metal Fittings, Direct Fit For 2004-2010 Chevy Silverado/GMC Sierra 2500HD/3500HD Duramax (LLY/LBZ/LMM) OEM
Amazon.com
6
$29.99
Fuel Injector Return Line Kit With Metal Fittings, Direct Fit For 2004-2010 Chevy Silverado/GMC Sierra 2500HD/3500HD Duramax (LLY/LBZ/LMM) OEM
Amazon.com
$118.91
17-26 GM 6.6L L5P Duramax GM Fuel Injector Fuel Return Line- Passenger Side
Pure Diesel Power
$118.91
17-26 GM 6.6L L5P Duramax GM Fuel Injector Fuel Return Line- Passenger Side
Pure Diesel Power