There are plenty of options available while buying trailer oil caps in the market right now, and if you're confused regarding which one to go for, You have come to the right page.

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Our Top Picks:

Best Overall: Buy: Dexter Axle Trailer Oil Cap READ REVIEW

Best For Exact Replacement: Buy: Tectran Trailer Oil Cap READ REVIEW

Best For Easy Installation: Buy: Tikscience Trailer Oil Cap READ REVIEW

Best With Part Number: Buy: Gwnowzzet Trailer Oil Cap READ REVIEW

Best With Manufacturer Part Number: Buy: Usonline911 Trailer Oil Cap READ REVIEW

Best Overall: Dexter Axle Trailer Oil Cap

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We are personally inclined towards the Dexter Axle Trailer Oil Cap, It is not so pricy, but it overachieves its purpose and is outstanding in important aspects. Measure your existing cap to verify fitment. Make sure this fits by entering your model number. In short, with a 4.6 rating and more than 376 buyers, the dexter axle trailer oil cap stands as the best choice.

One customer says - "They are nice and clear so at a glance you can see the oil level. ". Most buyers quickly discovered that the oil was a perfect fit for dexter 7000 lb. As a result, customers were eager to recommend it to friends and families.

• Dexter axle 6k-8k oil cap 9k prior to 10/89.
• Good brand reputation.

Best For Exact Replacement: Tectran Trailer Oil Cap

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The Tectran Trailer Oil Cap might be a relatively new release, but it's still nothing short of impressive this year, thanks to multiple price cuts and added new features over the past few months. Also, the oil is made with nice parts and it fits perfectly. Make sure this fits by entering your model number. Finally, the tectran trailer oil cap fits nice, is designed for exact replacement and it works well for heavy trucks.

One customer says - "Better than going to a dealer and trading your first born for the part. ". Almost all customers found that the oil fits 94 Peterbilt 379 with 3406e cat motor 5ek prefix.

• Good brand reputation.
• New and hot releases.

Best For Easy Installation: Tikscience Trailer Oil Cap

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If you often find yourself confused about the appropriate and satisfactory cap, Tikscience Trailer Oil Cap is your end point. The tikscience trailer oilcap is easy to install, allows for a great deal and it is compatible. Or you can install it after watching the youtube video. These oil caps are made of high - quality durable abs plastic. It is corrosion - resistant, oxidation - resistant, and has a long service life.

Finally, the tikscience traileroil cap fits for dexter 9k-10k general duty axles built after 1989 & before July 2009, fits for dexter 10k hd, 12k, & 15k axles.

In conclusion, for almost all customers, it was what they were looking for.

• This fits perfectly and it is great for direct replacement.
• Easy to install, you can install it directly.
• Replace number - this oil cap replace number is k71-148-00.
• This is made for easy installation, has outside thread diameter and it is easy.

Best With Part Number: Gwnowzzet Trailer Oil Cap

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Best part: Gwnowzzet Trailer Oil Cap costs comparatively low and it is available to ship in 24 hours. The gwnowzzet trailer oilcap fits for Dexter 9k (after oct.1989-jul.2009), 10k hd, 12k & 15k axles. The manufacturer says: We will help you solve the problem as soon as possible and within 24 hours. And, the cap fits well and it is compatible with part number.

Above all, the gwnowzzet traileroil cap includes 2 oil cap, 2 o-ring, 2 rubber plug.

Overall, for almost all customers, oil was what they were looking for.

• Fits dexter 9k-10k general duty axles built after 1989 & before July.
• Fits dexter 10k hd, 12k, & 15k axles.
• Good brand reputation.

Best With Manufacturer Part Number: Usonline911 Trailer Oil Cap

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The Usonline911 Trailer Oil Cap is suitable and reliable and fits well with your daily purpose. And, this works with part number and it is brand new. Make sure this fits by entering your model number. Lastly, the usonline911 trailer oil cap will not fit 10k 2009 and newer "general duty " axles from dexter.

• Package include: 2 caps 21-36; 2 o-rings; 2 rubber plugs.
• Fitment: for Dexter 10k-hd 12k& 15k.
• 100% brand new and high quality.
• This will not fit 10k 2009 and the newer "general duty axles from Dexter".