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BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 12)
BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 12)
BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 12)
BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 12)
BlueDevil Rear Main Sealer provides a permanent seal to keep your vehicle’s oil inside the rear of the engine.
BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 12)
Item #: 105205296

BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 12)

Item #: 105205296

NZD 443

NZD 547

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*All items will import from US

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BlueDevil Rear Main Sealer provides a permanent seal to keep your vehicle’s oil inside the rear of the engine.
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What Stands Out

Effective Sealant
Formulated to quickly eliminate leaks, the BlueDevil Rear Main Sealer is designed to restore sealed gaskets, offering reliable performance for vehicle owners facing oil leaks.
User-Friendly
Easy to apply and compatible with all motor oils, this product simplifies the repair process, making it accessible for both DIY enthusiasts and professional mechanics alike.
Cost-Effective Solution
Packaged in a convenient 12-ounce set, it provides great value for those needing multiple applications, saving money while ensuring long-lasting results.

Product Details

Shop BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 12) online at a best price in New Zealand. B0DPXYVCZN
  • Permanent seal: This product is formulated to flow into damaged areas of the rear main seal to provide a permanent seal to keep your vehicle’s oil inside of the rear of the engine. Works as a permanent repair and does not need to be added when oil is changed.
  • Easy to use: BlueDevil Rear Main Sealer is designed to be easy to use, making it accessible to a wide range of drivers. Simply pour the recommended amount into the engine oil.
  • Restores while you drive: Designed to restore dried, cracked, and shrunken rubber seals to their original condition while you drive.
  • Safe to use: Does not contain petroleum distillates which can destroy seals.
  • Compatible with all types of engines: Works on gasoline or diesel engines that use synthetic or conventional oils, making it a versatile product that can be used on a wide range of vehicles.
  • Do not use in brake systems or on painted surfaces!
Brand NameBlueDevil Products
Global Trade Identification Number10071621700546
Number of Items12
Included Components12 bottles of rear main sealer
ManufacturerHighline Warren
Part NumberBDEV0023412
Item FormLiquid
Compatible MaterialLiquid
Style Name12 Pack
Material Typeliquid
Materialliquid
BrandBlueDevil Products
Style12 Pack
Item Weight8 lbs (3.63 kg)

What's in the box

12 bottles of rear main sealer

Who Should Buy?

Suitable For
  • Car Mechanics

    Ideal for mechanics seeking a quick and effective solution to rear main seal leaks in various vehicle models.

  • DIY Enthusiasts

    Perfect for DIY car owners wanting to extend engine life and reduce oil leaks without expensive repairs.

  • Older Vehicles

    Beneficial for older cars experiencing seal wear, helping to prevent costly engine damage through oil leakage.

Not Suitable For
  • New Vehicles

    Not suitable for newer models, as they may have different sealing technologies that require specialized care.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is BlueDevil Rear Main Sealer used for?

    Answer: BlueDevil Rear Main Sealer is specifically designed to eliminate oil leaks from the rear main seal in your vehicle. It works by rejuvenating the rubber seals, restoring their flexibility and effectiveness. For vehicles experiencing oil leaks that stem from this area, applying the sealer can help prevent further oil loss and maintain engine performance, making it ideal for cars that undergo regular usage or are older models with wear and tear.
  • Question: How do I apply BlueDevil Rear Main Sealer?

    Answer: To apply BlueDevil Rear Main Sealer, start with a clean engine and remove the oil drain plug. Pour the entire contents of the 8-ounce bottle into the engine oil through the oil filler cap. Run the engine for about 15 minutes to allow the sealer to circulate and take effect, effectively sealing leaks. This method is perfect for those who want a quick fix without extensive dismantling of engine components.
  • Question: Is BlueDevil Rear Main Sealer safe for all engines?

    Answer: Yes, BlueDevil Rear Main Sealer is designed to be safe for all types of gasoline and diesel engines. It does not contain harmful solvents that can cause damage to engine components. Whether you own a domestic or imported vehicle, using this sealer can provide effective results. It’s particularly useful for older cars with worn seals that may be prone to leaking.
  • Question: How long does it take for BlueDevil Rear Main Sealer to work?

    Answer: Most users begin to see results from BlueDevil Rear Main Sealer within the first few hours of application. The compound begins to seal leaks as the engine runs, helping restore lost oil pressure. It’s best for situations where minor leaks need a fast and reliable solution, making it a popular choice for daily drivers who depend on their vehicles.
  • Question: Can BlueDevil Rear Main Sealer fix a significant oil leak?

    Answer: While BlueDevil Rear Main Sealer is most effective for minor to moderate leaks, it may not completely resolve major leaks resulting from extensive seal damage or other mechanical issues. For significant leaks, further investigation and repairs might be necessary. Use it as a part of your maintenance routine, especially in older vehicles, to prolong engine life and manage minor leaks.
  • Question: Is BlueDevil Rear Main Sealer compatible with synthetic oils?

    Answer: Yes, BlueDevil Rear Main Sealer is compatible with both conventional and synthetic oil types. This flexibility allows car owners who switch between different oil types to still use this product effectively. It’s particularly beneficial for high-mileage vehicles that require synthetic oil for optimal performance, addressing leaks without disrupting the oil quality.
  • Question: What are the main benefits of using BlueDevil Rear Main Sealer?

    Answer: The primary benefits of using BlueDevil Rear Main Sealer include the reduction or complete elimination of oil leaks, improved engine performance, and extended engine life. It’s ideal for those looking for a straightforward solution to oil leaks without extensive repairs. Users often find it to be a cost-effective method to maintain their vehicles and add longevity to their engine.
  • Question: How does BlueDevil Rear Main Sealer work chemically?

    Answer: BlueDevil Rear Main Sealer contains a unique blend of chemical agents that penetrate rubber seals, restoring their elasticity and creating a durable barrier against leaks. This chemical reaction helps fill gaps and imperfections in worn seals. Understanding this process can help car owners realize the importance of regular maintenance, especially in older vehicles prone to seal deterioration.
  • Question: Can I use BlueDevil Rear Main Sealer in a new vehicle?

    Answer: While BlueDevil Rear Main Sealer is primarily targeted at older vehicles or those with minor leaks, it can be used in new cars as a preventive measure. Utilizing it early can help maintain the integrity of the rear main seal, especially in models with a higher tendency for oil leaks due to engine design. It's a proactive approach for those who want to avoid future issues.
  • Question: Where can I buy BlueDevil Products 00234 Rear Main Sealer - 8 Ounce?

    Answer: You can purchase BlueDevil Products 00234 Rear Main Sealer - 8 Ounce through Ubuy in New Zealand. Ubuy offers a wide selection of automotive products including this popular rear main sealer, ensuring you receive quality products conveniently.

BlueDevil Products Sealants Editorial Review

**** The Blue Devil Rear Main Sealer has sparked a range of customer experiences among automotive enthusiasts and everyday users alike. Many customers who faced significant oil leaks were hopeful when turning to this product as a cheaper, less invasive solution compared to hefty repair bills. A notable case involved a 2009 Ford F150 with a serious rear main seal leak; after using the sealer, the leak significantly diminished, leading to a triumphant review that praised the sealer’s effectiveness. Similarly, a customer with a Duramax Diesel truck reported a marked improvement, with a large oil puddle reducing to a smaller spot, thus allowing them to delay necessary repairs. Other users recounted positive outcomes following initial skepticism, noting how day-to-day observations indicated reduced or eliminated leaks. One such instance involved a Jeep Cherokee where the sealer surprisingly resolved a persistent oil drip, affirming the product's potential in emergency situations. However, not all experiences have been favorable. Some customers found that the product either slowed the leak without stopping it altogether or had no measurable effect. Reports of exacerbated issues included oil pressure problems that were attributed to the sealer affecting the oil sending unit. Such mixed reviews paint a picture of a product that offers a temporary solution rather than a complete fix, lending it a reputation as a potential "band-aid" for aging vehicles rather than a guaranteed remedy. In conclusion, while the Blue Devil Rear Main Sealer has drawn commendations for its cost-effectiveness and temporary relief from oil leaks, its performance remains hit-or-miss, largely dependent on the condition of the vehicle’s seals. Users needing immediate repairs and willing to experiment may find it beneficial, but those expecting a long-term solution may be disappointed. **

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Pros

  • Cost-effective alternative to costly repairs.
  • Positive results reported for some users, with leaks significantly reduced or stopped.
  • Easy to use; simply pour into the crankcase.

Cons

  • Mixed results; effectiveness can vary depending on the condition of the vehicle's seals.

Platform Trust & Buyer Confidence

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Ranee
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“Paint ordered from USA, u buy got the product to me in New Zealand in approx a week”

22 July 2026 · via Trustpilot
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“very speedy delivery,tracking info was superb-best experikence ever!!!”

24 June 2026 · via Trustpilot
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Nicholas
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“Love what I received and ordered found that usa clothes are more better quality and look better than the same clothes in my country but are harder to find here recommend ubuy 100%”

22 June 2026 · via Trustpilot
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Dneah
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“Product came earlier than expected (shipped from US to NZ), in about 3 weeks. No damages and product was exactly as advertised!”

15-Jul-26 · via Trustpilot
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Tania
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“Easy to order, easy to track and the product is great to use. Also, the person-to-person (not automated) phone call I got to confirm that I'd received the item was wonderful ??”

11-Jul-26 · via Trustpilot
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  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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