MK4 Before-Catalyst Oxygen Sensor (1.8T)

MK4 Before-Catalyst Oxygen Sensor (1.8T)

Marsoni

M251S

$119.99

Get it in 3 business days with 1 day shipping. Friday, May 29

MK4 Before-Catalyst Oxygen Sensor (1.8T)The Bosch oxygen sensor utilizes a mix of zirconium and yttrium oxides and other elements to form a tough base that withstands the intense stress to which oxygen sensors are subjected. Each element is incredibly strong for best in class performance and maximum service life. > OE Equivalent. > Direct fit for easy installation. > OE Style connectors and wire lengths. > Base ceramic probe of Zirconium and Yttrium. > Patented Platinum Power Grid. > Fine

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We offer a 30-day return/exchange service after receiving.
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This product is generally durable and easy to throw. However, the original rope knot came undone after just four throws, per my wife. Unfortunately, my knot-tying skills are limited to fishing knots and slip knots, which is on me. While I can't give a perfect score, I believe it deserves a 4.5 out of 5 stars due to the knot issue. A simple solution would be to apply heat shrink tubing over the knot and heat it to secure it, which would enhance its reliability and potentially elevate the rating to a perfect five stars.

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Reviewed in the United States on March 29, 2025

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Charles Rogers

Birmingham, US

★★★★★ 5

Our German Shepherd loves it!

Size: Large (Pack of 1)

Order arrived promptly and in good condition. Our GSD barely let us get it out of the package before wanting to play with it. Works great as training reward and for fetch games. Been using it for three weeks, and it is holding up well.

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Reviewed in the United States on May 4, 2026

Verified Purchase

Brookes

Dallas, US

★★★★★ 5

I think this family company improved the strength of the rope staying in the ball

Size: Large (Pack of 1)

I bought two of these balls when I needed to replace my old ones. After I got them I decided to read some reviews and I noticed people were complaining about their rope pulling through easily and their dog chewing through the rope fast. First of all this strictly is a ball for reward and yes tug as a reward while training mostly working dogs and sport dogs so the rope is designed perfectly for that reason. It’s not a chew toy. And as for the rope pulling through easily. I have a big male shepherd over 100 lbs who I was participating in a dog sport with a lot of Really strong tugging and this ball stood up to it perfectly. I think they must have taken advice from the reviews and improved the b-ball if people were having the issue of the rope coming out and someone had suggested putting a piece of something inside the ball to hold the rope in better and now there is one so I would feel fine about suggesting this ball as a reward and training ball. My dog loves them!

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Reviewed in the United States on October 1, 2019

Verified Purchase

Edward

Massapequa, US

★★★★★ 1

Unless dog is familiar with toy

Size: Large (Pack of 1), Size: Large (Pack of 1)

Very delicate. Puppy chewed it for 5 min while getting familiar and almost destroyed the string

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Reviewed in the United States on March 2, 2026