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Engine Valve Cover
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2019 - 2020 BMW Z4 Valve Cover (OEM)

Only 1 left in stock
$589.95

ℹ️ Product Notes

This is a used valve cover.

Fits 2.0L 4-cylinder B46 and B48 engines only. Includes gasket. Does not include the pressure control valve. Check production date for 2020 models.
Condition: Excellent (A)
Like new, minimal to no wear
See Other BMW Z4 Engine Valve Covers
SKU #
4367934-02O1MB.053

Why Buy Used OEM Parts?

✓ Quality-Verified: Every used OEM part we sell has been professionally inspected and tested to ensure it meets our quality standards. While it may show some cosmetic wear from previous use, it's fully functional and ready to install.

✓ Original Equipment: This is a genuine OEM (Original Equipment Manufacturer) part - the exact same part that came with your vehicle from the factory. It's designed specifically for your make and model, ensuring perfect fitment and performance.

✓ Works Like New: Despite some visual wear, this part will perform just as well as a brand new one. The internal components and functionality are intact, giving you the same reliability you'd expect from OEM quality.

✓ Significant Savings: Save 50-80% compared to buying new! Used OEM parts offer exceptional value - you get factory quality at a fraction of the cost. It's the smart choice for budget-conscious vehicle owners who won't compromise on quality.

✓ Risk-Free Purchase: We stand behind our used parts with a generous 6-month warranty, 30-day returns, and 100% money-back guarantee. If it doesn't work out for any reason, simply return it for a full refund. You have nothing to lose!

🛡️ 30-Day Returns + 6-Month Warranty - Buy with Confidence!

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Vehicle Fitment Guide

This part fits the following vehicles:

BMW
Z4 2019-2020 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
sDrive20i M Sport Convertible 2019 - 2020 L4 2.0L Turbo RWD | Automatic | Fits 2.0L models produced through January 2020
sDrive20i Sport Line Convertible 2019 - 2020 L4 2.0L Turbo RWD | Automatic | Fits 2.0L models produced through January 2020
sDrive30i Convertible 2019 - 2020 L4 2.0L Turbo RWD | Automatic | Fits 2.0L models produced through January 2020

⚠️ Important: Please verify your vehicle's year, make, model, and specifications before ordering. If you're unsure about fitment, contact our customer service team for assistance.

Policies

Shipping & Handling

  • Standard shipping: 3-7 business days via UPS Ground
  • Parts are carefully packaged to prevent damage during transit

Returns (30 Days)

We accept returns within 30 days of delivery for this part.

  • Defective parts: We will replace the part or issue a refund at our discretion
  • Electronic parts: Must be returned with the sealed inspection bag unopened. The clear bag allows full visual inspection before opening. Once opened, electronic parts can only be exchanged for a replacement if defective — no refunds
  • Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
  • Return shipping: We cover return shipping as part of our 100% money-back guarantee
  • Parts must be returned in original packaging and unmodified condition
  • Poorly packaged returns that arrive damaged will not be credited

6-Month Warranty

All used parts include a 6-month warranty from the date of purchase.

  • If your part fails within 6 months, we will send a replacement
  • Refunds are only issued if we cannot provide a suitable replacement
  • Warranty covers defects — not installation errors, misuse, or damage after installation

Note: Warranty is for replacement, not refund. A part failing on day 80? We'll replace it. But the return window for refunds is 30 days.

Damaged in Shipping?

If your part arrives damaged:

  • Stop immediately — do not install the part
  • Keep all original packaging and boxes
  • Take clear photos of the damage and packaging
  • Contact us within 48 hours of delivery

We will handle the carrier claim. You are not responsible for shipping damage — we just need your help documenting it.

Order Cancellation

Orders can be cancelled before shipment for a full refund. Once shipped, cancellations follow our return policy.

Symptoms & Diagnosis

Warning signs the Valve Cover is failing:

  • Oil leaks around the valve cover gasket
  • Burning oil smell
  • Engine misfires
  • Rough idling
  • Check engine light illuminated

How to test if this part is the problem:

  1. Visual Inspection: Look for cracks or damage to the valve cover itself. Check for oil leaks around the valve cover gasket.
  2. Pressure Test: A mechanic can perform a pressure test to check for leaks in the valve cover.
  3. Smoke Test: A smoke test can help identify the source of oil leaks.
  4. PCV Valve Check: The PCV (Positive Crankcase Ventilation) valve is often integrated into the valve cover. A faulty PCV valve can cause pressure buildup and lead to valve cover leaks. Check the PCV valve's operation.

Common failure causes for this part:

  • Heat and age causing the plastic to become brittle and crack
  • Deterioration of the valve cover gasket
  • Over-tightening of valve cover bolts
  • Clogging of the PCV valve, leading to excessive pressure

Buyer's Checklist

What to look for when buying this part:

  • Ensure the part is compatible with your specific vehicle year and model.
  • Check for any visible damage, such as cracks or broken pieces.
  • Verify that all necessary components, like the gasket, are included.

Quality indicators for the available options:

FeatureUsed OEMRefurbished OEMNew Aftermarket
OriginGenuine factory partGenuine factory partThird-party manufacturer
ConditionUsed, inspected, and testedRestored with new componentsBrand new
PriceTypically the lowest priceMid-range priceVaries, can be budget-friendly or premium
WarrantyVaries, often shorter than new partsVaries, often longer than used partsVaries, typically longer than used parts
ReliabilityProven track record if properly testedPotentially like-new performancePerformance depends on manufacturer

What's typically included with the part:

  • Valve cover
  • Valve cover gasket (often, but not always)
  • Sometimes includes bolts or other small hardware

Installation Overview

Difficulty level and estimated time:

  • Difficulty: Intermediate
  • Estimated Time: 2-4 hours

Special tools needed (if any):

  • Socket set
  • Torque wrench
  • Screwdrivers
  • Possibly E-torx sockets

Critical steps and tips:

  1. Disconnect the negative battery cable.
  2. Remove any components obstructing access to the valve cover (e.g., air intake, wiring harnesses).
  3. Carefully remove the old valve cover, being mindful of any attached hoses or sensors.
  4. Clean the mating surface on the cylinder head.
  5. Install the new valve cover and gasket.
  6. Torque the valve cover bolts to the manufacturer's specified torque.
  7. Reconnect all hoses, sensors, and wiring harnesses.
  8. Reconnect the negative battery cable.

Whether DIY is recommended or professional installation is better:

  • DIY is possible for mechanically inclined individuals. However, due to the complexity of modern engines and the importance of proper torque specifications, professional installation is recommended for those without experience.

Buying Options

Compare: Used OEM, Refurbished OEM, New Aftermarket

| Option | Description that the part is genuine and of good quality.

  • Used OEM: Offers the best value. You get a genuine factory part that has been tested and inspected, at a significantly lower price than new.
  • Refurbished OEM: A good option if you want a factory part that has been professionally restored with new components.
  • New Aftermarket: A brand new part manufactured by a third-party company to meet or exceed OE specifications.

Typical Lifespan

How long this part normally lasts:

  • A valve cover can last for 100,000 miles or more under normal driving conditions.

Factors that affect longevity:

  • Driving habits (aggressive driving can increase stress on the engine)
  • Regular maintenance (oil changes, PCV valve replacement)
  • Environmental conditions (extreme temperatures can degrade the plastic)

Price Ranges

Budget vs mid-range vs premium options:

  • Used OEM: $50 - $150
  • Refurbished OEM: $100 - $250
  • New Aftermarket: $80 - $300

Labor cost considerations if applicable:

  • Labor costs for valve cover replacement can range from $200 to $500, depending on the complexity of the job and the shop's hourly rate.

Total job cost estimates:

  • DIY: $50 - $300 (parts only)
  • Professional Installation: $250 - $800 (parts and labor)

Vehicle-Specific Notes

Known issues for this vehicle's system related to this part:

  • Some models are known to have issues with the PCV valve integrated into the valve cover, leading to premature failure.
  • Cracking of the plastic valve cover due to heat cycling is a common problem.

Any TSBs or common complaints:

  • Check for any Technical Service Bulletins (TSBs) related to valve cover leaks or PCV valve issues on these BMW models.

Verification After Install

How to confirm proper operation:

  • Start the engine and let it idle.
  • Check for any oil leaks around the valve cover.
  • Monitor the engine for any unusual noises or vibrations.

What to look/listen for to verify it's working correctly:

  • No visible oil leaks.
  • Smooth engine idling.
  • No check engine light.
  • Normal engine performance.

FAQ

Q: How do I know if my valve cover gasket is leaking or if it's the valve cover itself?
A: Look for oil leaks around the edge of the valve cover. If the valve cover itself is cracked, that's a sign it needs to be replaced. Sometimes it's hard to tell, and replacing both the valve cover and gasket is recommended.

Q: Can I drive with a leaking valve cover?
A: It's not recommended. Oil leaks can damage other engine components and create a fire hazard. It's best to address the leak as soon as possible.

Q: Is it okay to use a used valve cover?
A: Yes, a used OEM valve cover can be a good option if it's been inspected and tested to ensure it's in good working condition. It's often a more affordable alternative to a new part.

Q: Will a new valve cover fix my engine misfire?
A: It depends. If the misfire is caused by an oil leak from the valve cover affecting the spark plugs or ignition coils, then yes, replacing the valve cover and gasket can resolve the issue. However, misfires can have other causes, so it's important to diagnose the problem correctly.

Q: Does the valve cover come with a new PCV valve?
A: Sometimes. It depends on the specific valve cover. Check the product description to see if the PCV valve is included. If not, consider replacing the PCV valve at the same time as the valve cover.

Part Specifications

OEM Part Numbers:

  • BMW: 11127611278, 11127934493, 11128631745, 11128691778, 8691778

Fits Years: 2019 2020

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