what is the size of the wrench to use for this item?

You do not need a wrench. You can install hand tight. Turn till firm tight then if you can tighten no more than 1/4 turn. Use a rag or adjustable oil filter wrench.

What is the mircon rating?

see the graph in below link. depends on the efficiency. example aprox. at 20% about 4 microns, 80% at 14 microns, 99% at 24 micros etc https://www.stowerscat.com/p/74/Advanced%20Efficiency%20Engine%20Oil%20Filters.pdf

Will this filter work on my 04 duramax

Yes order a kit from mark decola diesel performance on instagram it’s 70 bucks but comes with with the adapter and the filter I run it on my lbz duramax

Can you use synthetic Oil with this filter?

oil is oil, it will filter it, the microns is what you look for in a high end filter

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Description

⚙️ Power your engine with the filter that means business!

FAST RELIABLE - Get genuine CAT filters delivered quickly to keep your machinery running without downtime.
PROVEN PERFORMANCE - Rated #134 in Automotive Replacement Oil Filters with 4.8-star customer satisfaction.
OPTIMIZED DIMENSIONS - Compact 262mm height and 108mm diameter for perfect compatibility with your loader.
AUTHENTIC CAT QUALITY - Trust the original for unmatched engine protection and durability.
PRECISION FIT GUARANTEED - Thread size 1.125-16 UNF ensures seamless installation every time.

The Caterpillar 1R1807 oil filter is a genuine, high-efficiency replacement part designed specifically for loaders. Featuring a precise 1.125-16 UNF thread and compact dimensions (262mm height, 108mm diameter), it guarantees a perfect fit and reliable engine protection. Trusted by professionals and ranked among top automotive filters, this CAT filter ensures durability and optimal performance to keep your heavy machinery running smoothly.

Specifications

ASIN	B01B27NAKQ
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#7,853 in Automotive ( See Top 100 in Automotive ) #134 in Automotive Replacement Oil Filters
Brand	CAT
Customer Reviews	4.8 4.8 out of 5 stars (678)
Date First Available	October 23, 2013
Is Discontinued By Manufacturer	No
Item Weight	2.1 pounds
Item dimensions L x W x H	4.25 x 4.25 x 10.31 inches
Item model number	1R-1807
Manufacturer	Caterpillar
Manufacturer Part Number	1R-1807
Material	Paper, Steel
Model	1R-1807-1Pack
Number of Items	1
OEM Part Number	1R-1807
Product Dimensions	4.25 x 4.25 x 10.31 inches
Product Grade	Performance Part
Thread Size	1.125-16 UNF
UPC	760999041902
Vehicle Service Type	Loader

Reviews

J**N

GREAT CAT FILTERS

good price received the product quickly fits perfectly genuine caterpillar

26.10.2025

L**S

Great Product!

Worked well - exactly as described.

19.10.2025

J**O

Cat oil filter

So far it's been a good filter on my 2007 lmm duramax. As far as I can tell it doesn't have any dry start issues as some people voice concerns about. It builds oil pressure right away as it would with the stock filter size.

22.05.2025

D**.

quick shipping

arrived quickly an best priced

15.01.2026

R**D

Packaged Properly

Exactly as it should be

27.01.2026

J**S

Outstanding!

It works...it a CAT!

17.01.2026

Y**D

Best product

Best filters best price

5.01.2026

S**H

Cat C7 filer

Perfect factory fit for my C7

5.08.2025

G**.

Awesome used it before works grea

27.01.2026

R**C

Good product and Fast delivry

25.01.2025

A**Y

reasonable price

23.07.2023

D**K

SCAM

17.01.2026

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€ 73.46

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Imran F.

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2 weeks ago

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Caterpillar 1R1807 1R-1807 Engine Oil Filter Advanced High Efficiency Multipack (Pack of 1)

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