Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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Description
Merchant Automotive 10491-1 Heavy Duty Injector Return Line BoltGAP carries the Merchant Automotive 10491 1 Heavy Duty Injector Return Line Bolt will replace the broken bolt on your vehicle. With the shallow head on the factory fuel injector return line bolt, it is common for the head to strip out during removal or installation. Proper engagement of the Allen wrench in the return line bolt head is critical for accurate torque during reassembly to prevent a fuel leak at the return line fitting. Replace this bolt if
GAP carries the Merchant Automotive 10491-1 Heavy Duty Injector Return Line Bolt will replace the broken bolt on your vehicle. With the shallow head on the factory fuel injector return line bolt, it is common for the head to strip out during removal or installation. Proper engagement of the Allen wrench in the return line bolt head is critical for accurate torque during reassembly to prevent a fuel leak at the return line fitting. Replace this bolt if damaged to prevent expensive issues or to avoid future potential problems later on down the line.
This Heavy Duty Duramax Fuel Injector Return Line Bolt has been re-engineered to allow nearly twice the amount of tool engagement. The unique head shape found on LB7 return line bolts offers the necessary strength while maintaining proper clearance on other engine parts. 8 Required per engine.
This Heavy Duty Duramax Fuel Injector Return Line Bolt has been re-engineered to allow nearly twice the amount of tool engagement. The unique head shape found on LB7 return line bolts offers the necessary strength while maintaining proper clearance on other engine parts. 8 Required per engine.
Features:
- Direct-Fit Replacement
- Heavy Duty Construction
- Straightforward Installation
- Helps To Avoid Expensive Repairs
- Nearly Double The Tool Engagement
- Great For Replacing Rounded Off Bolt
Note: 8 Required per engine.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 1792 reviews
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Product Reviews
★★★★★ 5
thank you
Color: Tan, Size: Driver side
installed today fits like a glove
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Reviewed in the United States on December 22, 2025
★★★★★ 2
Handle broke and had to reorder.
Color: Tan, Size: Driver side
The quality is not strong enough. Will not t recommend to others.
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Reviewed in the United States on December 13, 2024
★★★★★ 5
Perfect fit
Color: Tan, Size: Driver side
After years of tugging on the grab handle it finally broke. This was a great replacement at a great price.
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Reviewed in the United States on October 16, 2024
★★★★★ 5
True pruduct! Like Magic!
Size: 4 oz Kit, Size: 4 oz Kit
Like magic!! Ived tried so many pruduct, specialy those lies on tick tock products, nothing but fakes. But this one is aswome and does what it says it does. Proof with pics attached. I have washe my car bith brush and has not fade or washed off. I only used 1 pass and looks like new! Worth every penny!!
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Reviewed in the United States on May 2, 2026
★★★★★ 5
It really does the job!
Size: 8 Oz
This stuff actually works really well. It brought all my plastic back to life. And although I don't think it's designed to use on metal my toolbox is black and it looked faded and I did the toolbox with it and it looks brand new now. There's a die in this product that makes it last longer than most other products I believe. And if your plastics are really bad like some of mine were give it to treatments and you'll be amazed. You have to let it dry for a while it will be sticky depending on the climate for a day or so but it's pretty much dry it won't you know smudge or anything but it just feels sticky to the touch for a day or two. I've been through the car wash a few times since I treated it and it didn't hurt that new finished.
I do recommend this product.
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Reviewed in the United States on May 20, 2026