OEM Engine Cover Gasket Block-Off Plate Gasket 11537505657 For BMW N20 N46 N55 N63 B48 B58

1. Functional Principle

Seals unused engine ports (e.g., coolant/oil passages) during BMW engine modifications or repairs. Prevents fluid leaks and maintains system pressure by creating a metal-to-metal compression seal when torqued to spec.

2. Key Features

3.Vehicle Compatibility Chart

4. Applications

• Blocks EGR delete ports on N47/N57 diesel engines

• Seals timing chain inspection covers on N55/B58

• Alternative to plastic OE plugs in high-temp zones

5. Manufacturing Process

1. CNP Machining - Waterjet-cut SS304 baseplate

2. Surface Treatment - Micro-abrasion for optimal adhesion

3. Coating - Dual-layer Viton® application (0.3mm per side)

4. QC - 100% helium leak tested at 3 bar

6. Installation Method

Tools Required:

• Torque wrench (8-15Nm range)

• BMW-approved thread sealant (e.g., Loctite 574)

Steps:

1. Degrease mating surfaces with IPA

2. Apply sealant to gasket perimeter

3. Finger-tighten bolts in crisscross pattern

4. Final torque: 12Nm ±5% (refer to ISTA)

7.FAQ
Q1.Is the product in stock?
A:Yes, it is
Q2.Does it include installation tools?
A:.Kit contains only sealing components; professional tools required (repair manual available upon request).
Q3 Minimum order quantity?
A:Samples available, bulk orders qualify for tiered discounts.
Q4. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.
Q5: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.

Q6.Are your products guaranteed in quality? Is it tested before shipment?
Yes, our products have ISO9001 certificate and are 100% tested before export.