1. Engine Bearings Parts
  2. sku: 10301148526114713
  3. MG LEYLAND 12H1399

MG. LEYLAND 12H1399 Front Mgb Engine Cover Vent Tube

12h1399 Mg. Leyland Mgb Engine Front Side Cover With Vent Tube Late Style

( Brand: Mg. Leyland ), ( Part Type: Cover Engine Vent Tube ), ( Manufacturer Part Number: 12H1399 ), ( Vintage Part: Yes ), ( Country/region Of Manufacture: United Kingdom )

Review MG. LEYLAND Mgb Engine Front Side Cover Vent Tube Late Style

Leland 12H1399 MGB Engine Front Cover Vent Tube

The Leland 12H1399 MGB Engine Front Cover Vent Tube is an essential component designed for the cooling system of MGB vehicles. This tube facilitates the efficient flow of coolant and air between the engine and the exterior to maintain the optimal operating temperature.

Constructed from high-quality materials, this vent tube is built to last. It features a durable, flexible design that can withstand the rigors of regular use while providing the necessary flexibility for the engine to expand and contract during operation. The tube is made from reinforced rubber, which offers superior resistance to leaks and cracks compared to traditional plastic or metal alternatives.

The Leland 12H1399 MGB Engine Front Cover Vent Tube is designed to fit perfectly in MGB models. It has been engineered to match the exact specifications of the original part, ensuring a seamless installation process. The tube is compatible with both left and right engine installations, providing versatility for mechanics and DIY enthusiasts.

Installing this vent tube is a straightforward process. It connects to the engine front cover and the radiator shroud, allowing coolant and air to circulate freely between these components. Proper ventilation is crucial for maintaining the cooling system's effectiveness, and this tube ensures the engine remains at the ideal temperature for optimal performance.

In summary, the Leland 12H1399 MGB Engine Front Cover Vent Tube is a vital replacement part for MGB vehicles. Its high-quality construction, durability, and perfect fit make it an excellent choice for those seeking reliable cooling system performance.

A Comprehensive Analysis of Buying a Leland 12H1399 MGB Engine Front Cover Vent Tube

Introduction:

The Leland 12H1399 engine front cover vent tube is a vital component in the cooling system of MGB vehicles. It allows excess coolant vapors to escape, preventing the engine from overheating. In this analysis, we will discuss the pros and cons of buying this part to help you make an informed decision.

Pros:

1. Enhanced Cooling System: Replacing a worn-out or damaged vent tube ensures that your MGB's cooling system functions optimally. It reduces the risk of engine overheating and potential damage to other engine components.

2. Improved Engine Performance: A faulty vent tube can lead to a rise in engine temperature, which affects engine performance. By installing a new vent tube, you can restore the engine's performance and efficiency.

3. Longer Engine Life: Regular maintenance and replacement of worn-out parts like the vent tube contribute to a longer engine life.

Cons:

1. Cost: The Leland 12H1399 MGB engine front cover vent tube may be relatively expensive compared to some aftermarket alternatives. This could be a concern for budget-conscious buyers.

2. Installation Complexity: Installing the vent tube may require some mechanical skills and knowledge. If you're not confident in your abilities, it might be worth considering hiring a professional mechanic.

3. Potential for OEM vs Aftermarket Debate: Some buyers may prefer the original equipment manufacturer (OEM) part for its fit and finish, while others may opt for aftermarket alternatives due to cost savings.

Conclusion:

The Leland 12H1399 MGB engine front cover vent tube is an essential component in maintaining the cooling system of your MGB vehicle. Its benefits, including improved engine performance and longer engine life, outweigh the costs and installation complexities. Ultimately, the decision to buy this part depends on your budget, mechanical skills, and preference for OEM or aftermarket parts.

Recommendation:

If you're experiencing issues with your MGB's cooling system or suspect that the vent tube may be worn out, it's recommended to invest in a new Leland 12H1399 engine front cover vent tube. This part is crucial for maintaining your engine's health and ensuring optimal performance. Even if you're on a tight budget, consider the long-term benefits of this investment. If you're unsure about the installation process, consider seeking professional help to ensure a proper fit and functioning cooling system.

Details:

Likely from 1968 or later car as has long tube; but should fit all years. Front side cover with breather tube from MGB. I pack well, so parts arrive undamaged. Please inquire 1 954 JAGUARS or JAGPART.

I ship FedEx in the US, so need your phone number for box, OVERSEAS, worldwide; but rate given is Priority mail an Estimate. Also; please give me your phone number for the package.

part #: 12h1399 prices

  • $29.99-$59.99

specifications engibearing:

  • brand: Mg. Leyland
  • part type: Cover Engine Vent Tube
  • manufacturer part number: 12H1399
  • vintage part: Yes
  • country/region of manufacture: United Kingdom

shipping engibearing:

  • class: Expedited
  • cost: $12.00
  • service: Expedited
  • transit: 12-19 Days
  • type: Fixed

payments engibearing:

  • wallet: Google-pay
  • credit card: Discover
  • other

offer engibearing:

  • quantity: 1
  • started: October 13, 2025
  • availability: In Stock
  • sold: 0
  • options: Ship-to-home

returns engibearing:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted

seller engibearing:

  • rating: 96.9%
  • # reviews: 4255
  • city: Sebring, Florida

general engibearing:

  • condition: Used
  • Car Truck Parts Accessories > Engines Engine Parts > Engine Bearings
part type: cover engine vent tube, vintage part: yes, country/region of manufacture: united kingdom,
category: auto parts > car truck parts accessories > engines engine parts > engine bearings, sku: 10301148526114713,

Mg. Leyland 12H1399 Is Similar To:

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5 offers $29.99–$59.99 USD
  • Used. Offer #1 priced at $29.99 + $12.80 delivery = $42.79* total. +$12.80 shipping
  • Used. Offer #2 priced at $59.99 + $0.00 delivery = $59.99* total. FREE SHIPPING
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  • Used. Offer #4 priced at $49.95 + $0.00 delivery = $49.95* total. FREE SHIPPING
  • Used. Offer #5 priced at $54.95 + $14.95 delivery = $69.90* total. +$14.95 shipping

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