---
product_id: 102458034
title: "Extension Depot Duramax CAT 1R-1807 Oil Filter Adapter 13/16\"-16 to 1 1/8\"-16"
brand: "extension depot llc"
price: "₨21345"
currency: LKR
in_stock: false
reviews_count: 8
url: https://www.desertcart.lk/products/102458034-extension-depot-duramax-cat-1r-1807-oil-filter-adapter-13
store_origin: LK
region: Sri Lanka
---

# Extension Depot Duramax CAT 1R-1807 Oil Filter Adapter 13/16"-16 to 1 1/8"-16

**Brand:** extension depot llc
**Price:** ₨21345
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Extension Depot Duramax CAT 1R-1807 Oil Filter Adapter 13/16"-16 to 1 1/8"-16 by extension depot llc
- **How much does it cost?** ₨21345 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/102458034-extension-depot-duramax-cat-1r-1807-oil-filter-adapter-13)

## Best For

- extension depot llc enthusiasts

## Why This Product

- Trusted extension depot llc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

This is lower profile than the competition which makes installation easier given the length of the larger oil filter. This Duramax Oil Filter Adapter allows you to run a larger oil filter on your Duramax like a CAT 1R-1807 or AGCO: AG121853, BALDWIN: B7225, B7700, CARQUEST: 84791, CATERPILLAR: 1R1807, FLEETGUARD: LF3973, FRAM: PH9376, PH9376FP, LUBER-FINER: LFP3236, MACK: 20539275, 2191P551807, 485GB3236, NAPA: 7791, VMC: LF551807, VOLVO: 478736, 85114049. Simply remove the old nipple from your filter housing and replace it with this one. Please make sure to check the oil level in the truck as a larger oil filter will require more oil in your engine! All that is required to install is a 1/2" drive ratchet. Shipped daily, including Saturdays. Made and shipped from USA.

## Images

![Extension Depot Duramax CAT 1R-1807 Oil Filter Adapter 13/16"-16 to 1 1/8"-16 - Image 1](https://images-na.ssl-images-amazon.com/images/I/41%2BoGt1Ev7L.jpg)
![Extension Depot Duramax CAT 1R-1807 Oil Filter Adapter 13/16"-16 to 1 1/8"-16 - Image 2](https://images-na.ssl-images-amazon.com/images/I/41mm3Sou2wL.jpg)
![Extension Depot Duramax CAT 1R-1807 Oil Filter Adapter 13/16"-16 to 1 1/8"-16 - Image 3](https://images-na.ssl-images-amazon.com/images/I/41XPLpx2pBL.jpg)
![Extension Depot Duramax CAT 1R-1807 Oil Filter Adapter 13/16"-16 to 1 1/8"-16 - Image 4](https://images-na.ssl-images-amazon.com/images/I/417KF8-ULIL.jpg)
![Extension Depot Duramax CAT 1R-1807 Oil Filter Adapter 13/16"-16 to 1 1/8"-16 - Image 5](https://images-na.ssl-images-amazon.com/images/I/31bG0nr64AL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Works perfect on 2014 GMC 2500HD LML
  

*by L***N on Reviewed in the United States on November 18, 2019*

The threads are cut right without burs or rough/sharp threads.  On my generation LML Duramax the stock nipple has a 24mm hex head aka 15/16 in freedom units, the older Duramaxs with need a nipple extractor.  The new filter adapter was installed with a ratchet square drive; don't over torque it.  I used a Donaldson P551807 filter instead of the CAT to save a few pesos with the same level of protection.  Add 11 quarts instead of the usual 10 and prefill the oil filter with about a pint to just saturate the large filter media to help with the initial dry start.  You can't prefill the oil filter because it is mounted horizontally.

### ⭐⭐⭐⭐⭐ 







  
  
    Nothing it is the deal. you will love it.
  

*by R***M on Reviewed in the United States on September 29, 2020*

I love my truck . I drove a semi over 30 years . The up grade is awesome. I rebuild engines the filter is the most important part of the life of your engine. Small filters will bypass oil . This oil is not filtered and can scar your crank. I have had to replace many of them due to scars to deep to repair. Use red lock tight when you install it. You cant go wrong with this. I wish i could do this on all my veh. This is worth it's weight in gold if you know anything about engines rebuilding and how the oil bypass works.

### ⭐⭐⭐⭐⭐ 







  
  
    Good quality fitting
  

*by M***E on Reviewed in the United States on July 14, 2019*

Good quality fitting. Installed on a 2007.5 Chevy Silverado 2500 HD LMM Duramax. I used a Donaldson P551807 filter instead of the the CAT 1R-1807.

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-01-22*