Cometic Toyota B58/B58H .036in MLX Head Gasket
Fits 2020–2023 BMW 540i / xDrive / 840i / 840i xDrive / M340i / M340i xDrive, 2019 BMW 640i xDrive Gran Turismo and more
All 37 applications- Authorized dealerGenuine Cometic Gasket parts, sourced direct
- 30-day returnsSee the return policy
- Diesel techs on the line908-223-9744, call or text
- Secure checkout
Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.036". World Products Man-o-War Block. Cometic MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements.
- Improved clamp load around the cylinder without increasing bore distortion
- Embossed Outer Layers Coated w/Viton
- Brand
- Cometic Gasket
- Part number
- C14144-036
- SKU
- CGSC14144-036
- UPC
- 191070559373
- Category
- Head Gaskets
- Weight
- 1.1 lb
- Shipping
- Ground, ships in 1 to 2 business days
- 2020–2023BMW 540i
- 2020–2023BMW 540i xDrive
- 2019BMW 640i xDrive Gran Turismo
- 2020–2022BMW 740i
- 2020–2022BMW 740i xDrive
- 2020–2022BMW 745e xDrive
- 2020–2023BMW 840i
- 2020BMW 840i Gran Coupe
- 2020–2023BMW 840i xDrive
- 2020BMW 840i xDrive Gran Coupe
- 2023–2024BMW M240i
- 2022–2023BMW M240i xDrive
- 2020–2023BMW M340i
- 2020–2023BMW M340i xDrive
- 2021–2024BMW M440i
- 2023–2024BMW M440i Gran Coupe
- 2021–2024BMW M440i xDrive
- 2022–2024BMW M440i xDrive Gran Coupe
- 2020–2024BMW X3
- 2020–2024BMW X4
- 2020–2024BMW Z4
- 1949–1954Jaguar XK120
- 1955–1957Jaguar XK140
- 1958–1961Jaguar XK150
- 2020–2024Toyota GR Supra
| Years | Make | Model | Submodel |
|---|---|---|---|
| 1949–1954 | Jaguar | XK120 | Base |
| 1952–1954 | Jaguar | XK120 | M |
| 1955–1957 | Jaguar | XK140 | Base |
| 1955–1957 | Jaguar | XK140 | M |
| 1955–1957 | Jaguar | XK140 | MC |
| 1958–1961 | Jaguar | XK150 | Base |
| 1958–1961 | Jaguar | XK150 | S |
| 2024 | Toyota | GR Supra | 45th Anniversary Edition |
| 2020–2023 | BMW | 540i | Base |
| 2020–2023 | BMW | 540i xDrive | Base |
| 2019 | BMW | 640i xDrive Gran Turismo | Base |
| 2020–2022 | BMW | 740i | Base |
| 2020–2022 | BMW | 740i xDrive | Base |
| 2020 | BMW | 745e xDrive | Base |
| 2022 | BMW | 745e xDrive | Base |
| 2020–2023 | BMW | 840i | Base |
| 2020 | BMW | 840i Gran Coupe | Base |
| 2020–2023 | BMW | 840i xDrive | Base |
| 2020 | BMW | 840i xDrive Gran Coupe | Base |
| 2023–2024 | BMW | M240i | Base |
| 2022–2023 | BMW | M240i xDrive | Base |
| 2020–2023 | BMW | M340i | Base |
| 2020–2023 | BMW | M340i xDrive | Base |
| 2021–2024 | BMW | M440i | Base |
| 2021–2022 | Toyota | GR Supra | A91 Edition |
| 2023 | Toyota | GR Supra | A91-MT Edition |
| 2020–2024 | Toyota | GR Supra | Base |
| 2020 | Toyota | GR Supra | Launch Edition |
| 2020–2024 | Toyota | GR Supra | Premium |
| 2023–2024 | BMW | M440i Gran Coupe | Base |
| 2021–2024 | BMW | M440i xDrive | Base |
| 2022–2024 | BMW | M440i xDrive Gran Coupe | Base |
| 2020–2024 | BMW | X3 | M40i |
| 2020–2024 | BMW | X4 | M40i |
| 2022–2024 | BMW | Z4 | M40i |
| 2020 | BMW | Z4 | M40i First Edition |
| 2020–2021 | BMW | Z4 | sDrive M40i |
Applications are the manufacturer's published fitment for this part number.
Not sure it fits? Call 908-223-9744 or text us the year, model and engine. We confirm fitment before you order.
- Shipping
- In-stock parts ship in 1 to 2 business days. Tracking is emailed as soon as the label prints.
- Returns
- 30-day returns on unused parts in the original packaging. Return policy.
- Warning
- This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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Why buy here
A diesel shop that sells parts, not a website that sells boxes.
Every part on this site is one our own techs can stand behind.
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We run what we sell
A working diesel repair and fabrication shop in Nazareth, PA. These are the parts our techs install every week.
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Real techs on the phone
Call or text 908-223-9744 and you get a diesel tech, not a script.
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Authorized dealer
Genuine parts straight from the manufacturer, with the factory warranty behind them.
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Fast from stock
Most in-stock parts ship in 1 to 2 business days from warehouses across the USA.
Authorized dealer for 140+ brands
All brands- 7+ Years in business
- 6+ Shop technicians
- 30,000+ In-stock SKUs
- 25+ Trucks given away
Reviews
What customers say
Verified reviews collected by Loox from real orders.
Good to know
Questions, answered straight.
If it is not here, call or text the counter. Real people, real answers.
Fitment
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Will this fit my truck?
The Fits section at the top of the page lists the manufacturer's applications for this exact part. If your year, make and model is not there, or you are not sure, text us a photo of what you are replacing with your year and engine and we will confirm it before you order.
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What if I order the wrong part?
Call or text us before it ships and we will swap it. After delivery you have 30 days to return it in new, uninstalled condition. The return policy has the restocking details.
Shipping
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When will it ship?
In-stock parts usually ship within 1 to 2 business days from warehouses across the USA. The stock line under the options tells you the status of the part you are looking at. Large items ship LTL freight and we call to schedule delivery.
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Why did I only get part of my order?
We ship from multiple warehouses, so an order with several items can arrive in more than one box. Tracking for each shipment is emailed as it goes out. Full details in the shipping policy.
Returns and warranty
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What is the return policy?
30 days from delivery, in new and uninstalled condition, with a restocking fee. Everything is spelled out in the Returns & Refund Policy.
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How do warranty claims work?
We are an authorized dealer, so the manufacturer's warranty applies to every part we sell. Call or text us with your order number and we handle the claim with the brand for you.
Paying
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Can I pay over time?
Yes. Shop Pay installments are offered at checkout on qualifying orders, and the monthly estimate shows right under the price.
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What is a core deposit?
Some remanufactured parts, like injectors and turbos, carry a refundable core deposit. It is shown on the product page when it applies and refunded when your old part comes back to us.
The shop floor, Nazareth, PAFull Send Diesel, Nazareth, PA
A team of diesel people, not a call center.
Full Send Diesel is a shop full of techs, builders and parts people in Nazareth, Pennsylvania. When you call or text, you reach someone who works on these trucks and knows the parts.
Not sure what you need? Send a photo of what you are replacing with your year and engine. We will point you to the right part, confirm it is in stock, and get it moving.
Mon–Fri, 8am–4pm ET. After hours, text or email and we answer first thing in the morning.


























