Skip to content
  • We Are SLSHOP
  • The world’s leading classic SL destination. Welcome to SLSHOP.
tel +44 (0) 1789 337 070
SLSHOP
  • HOME
  • Showroom
    • Classic Mercedes-Benz
      • Showroom
      • Current Inventory
    • New Builds
      • W113 Factory
      • R107 Factory
      • R107 Sportline
      • R107 Electric
    • Selling Your SL
      • Valuation
      • Consignment Sale
      • Sell Us Yours
      • Previously Sold
    • BN COL 1
      • The SL Market

      • Buying

    • BN COL 2
      • SLSHOP Warranty

      • We are SLSHOP

  • Owner Services
    • W113 SL Tailored Services
      • W113 Pagoda Servicing
      • W113 Pagoda Setup
      • W113 Pagoda Restoration
    • R107 SL Tailored Services
      • R107 Servicing
      • R107 Bulkhead Repair
      • R107 Correct Restoration
      • USA to Euro Cosmetic Conversion
      • Hard & Soft Top Adjustment
      • Bulkhead Check
      • Sportline
    • R129 SL Tailored Services
      • R129 Servicing
      • R129 Diagnostics
      • R129 Restoration
      • R129 Roof operation fix
    • BN COL 1
      • Epic Restorations

      • Improving

    • BN COL 2
      • SLSHOP TV

      • We are SLSHOP

    • Classic Mercedes-Benz Owner Services
      • Complete Health Check
      • Structural Check
      • Engine Check
      • Brake Check
      • Under Body Check
      • Classic Mercedes Restoration
      • Modern Classics Servicing
      • Pre Season Check
      • SLSHOP MOT
    • SLSHOP Supporting services
      • Detailing
      • Hardtop Storage
      • Vehicle Storage
      • Transportation Support
      • Valuation Certificate
      • Rust protection
      • SLSHOP Service Process
    • CARE
      • SLSHOP Certified Servicing
  • Experience
    • Cotswolds Tour
    • Wales Tour
    • Open Day
    • Donnington Park
    • Rally Experience
  • Parts Store
    • W113 Pagoda Parts
    • R107 Parts
    • Sportline Parts
  • ClubHouse
  • We Are SLSHOP

R107 SL Heater Blower Motor Cover

Here we give you the lowdown on what should be a very simple and inexpensive part… but this is one that can lead to a major disaster if left for too long.

What is it?

This is the plastic cover (or lid) which sits above the heater blower motor, suitable for all R107 SLs with or without air conditioning. It replaces OE part number 1078300352.

Where does it go?

The blower motor sits beneath the plastic blower motor cover (or lid), inside a chamber within the bulkhead, at the back of the engine beneath the windscreen. 

There is a rubber seal that mounts to the bulkhead which the blower motor sits on top of. Above the blower motor, the plastic blower motor cover (or lid) also has it’s own rubber seal.

This area is a well known weak spot for the R107 SL. 

Why do I need it?

The original Mercedes-Benz items from the 1970s and 80s are made from a plastic that turns very brittle. After years of consistent heating and cooling as the engine heats and cools, the heater blower motor cover and rubber seal begin to fail. Once this has happened, water can get into the chamber and down inside the bulkhead. Not only does this slowly damage the blower motor, but starts to corrode the car from the inside out. 

A faulty blower motor could be noisy, erratic, spontaneous or simply not working. Rust within the bulkhead would explain damp carpets and a musty smell in the cabin.

Our redesigned unit is made from a modern plastic that will stand the test of time. Not only is our version more hardwearing than the original, but through rigorous testing these units have proved themselves to perform within 3% of the genuine Mercedes-Benz units air flow, making this the popular replacement choice for SL 107 owners.

Fig 1: Actual panels taken from customer cars

Below you can clearly see the damage that a leaking / defective blower motor cover can do. This is inside the chamber where the blower motor sits, and no R107 SL is immune from this, even the later cars are susceptible to it.

What are my options?

There are 5 products to think about when addressing this area of the car:

Blower motor (our part number 107.1180)

Blower motor seal (our part number 107.0331)

Blower motor cover (our part number 107.0289)

Blower motor cover seal (our part number 107.0746)

Blower motor resistor / control unit (our part number 107.0147)

We always recommend the complete bundle deal.

How do I fit it?

It is simple to fit and replace the blower motor, cover and seals, however we would advise a thorough check for rust and corrosion whilst the motor is removed. 

The SLSHOP are renowned for work with the bulkhead of the R107 SL. Be sure to watch our video on R107 Bulkhead Corrosion. Contact our team to find out more.

https://www.youtube.com/watch?v=oeMsD0nsdhY&t=24s

What else do I need to know?

The blower motor cover seal is a very small part relative to the damage that a failed seal can eventually cause. Once water has reached the unprotected metal inside the housing where the blower motor lives, there is very little to stop it causing huge amounts of damage to the car from the inside out.

Understanding the condition of this area on your car is vital to the long term enjoyment of your SL.

If you are unsure about any aspect of the blower motor / bulkhead area of your SL, please contact us.

Here we give you the lowdown on what should be a very simple and inexpensive part… but this is one that can lead to a major disaster if left for too long.

What is it?

This is the plastic cover (or lid) which sits above the heater blower motor, suitable for all R107 SLs with or without air conditioning. It replaces OE part number 1078300352.

Where does it go?

The blower motor sits beneath the plastic blower motor cover (or lid), inside a chamber within the bulkhead, at the back of the engine beneath the windscreen. 

There is a rubber seal that mounts to the bulkhead which the blower motor sits on top of. Above the blower motor, the plastic blower motor cover (or lid) also has it’s own rubber seal.

This area is a well known weak spot for the R107 SL. 

Why do I need it?

The original Mercedes-Benz items from the 1970s and 80s are made from a plastic that turns very brittle. After years of consistent heating and cooling as the engine heats and cools, the heater blower motor cover and rubber seal begin to fail. Once this has happened, water can get into the chamber and down inside the bulkhead. Not only does this slowly damage the blower motor, but starts to corrode the car from the inside out. 

A faulty blower motor could be noisy, erratic, spontaneous or simply not working. Rust within the bulkhead would explain damp carpets and a musty smell in the cabin.

Our redesigned unit is made from a modern plastic that will stand the test of time. Not only is our version more hardwearing than the original, but through rigorous testing these units have proved themselves to perform within 3% of the genuine Mercedes-Benz units air flow, making this the popular replacement choice for SL 107 owners.

Fig 1: Actual panels taken from customer cars

Below you can clearly see the damage that a leaking / defective blower motor cover can do. This is inside the chamber where the blower motor sits, and no R107 SL is immune from this, even the later cars are susceptible to it.

What are my options?

There are 5 products to think about when addressing this area of the car:

Blower motor (our part number 107.1180)

Blower motor seal (our part number 107.0331)

Blower motor cover (our part number 107.0289)

Blower motor cover seal (our part number 107.0746)

Blower motor resistor / control unit (our part number 107.0147)

We always recommend the complete bundle deal.

How do I fit it?

It is simple to fit and replace the blower motor, cover and seals, however we would advise a thorough check for rust and corrosion whilst the motor is removed. 

The SLSHOP are renowned for work with the bulkhead of the R107 SL. Be sure to watch our video on R107 Bulkhead Corrosion. Contact our team to find out more.

https://www.youtube.com/watch?v=oeMsD0nsdhY&t=24s

What else do I need to know?

The blower motor cover seal is a very small part relative to the damage that a failed seal can eventually cause. Once water has reached the unprotected metal inside the housing where the blower motor lives, there is very little to stop it causing huge amounts of damage to the car from the inside out.

Understanding the condition of this area on your car is vital to the long term enjoyment of your SL.

If you are unsure about any aspect of the blower motor / bulkhead area of your SL, please contact us.

More from ClubHouse

  • SADDLE UP FOR SUMMER WITH SLSHOP

    SADDLE UP FOR SUMMER WITH SLSHOP

    April 10th, 2021
  • Superb new cars spring into SLSHOP

    Superb new cars spring into SLSHOP

    April 5th, 2021
  • Which Mercedes-Benz R129 should I buy?

    Which Mercedes-Benz R129 should I buy?

    April 1st, 2021
  • Mercedes-Benz R107 Current Stock Roundup – Which would you choose?

    Mercedes-Benz R107 Current Stock Roundup – Which would you choose?

    March 23rd, 2021
  • 350SL, 380SL and 420SL: The history of the M116 engine and should you buy a Mercedes-Benz 420SL?

    350SL, 380SL and 420SL: The history of the M116 engine and should you buy a Mercedes-Benz 420SL?

    March 19th, 2021
  • Limited Edition 50th Anniversary Window Sticker

    Limited Edition 50th Anniversary Window Sticker

    March 16th, 2021
  • A post 86 Signal Red Full House – 300SL, 420SL, 500SL and 560SL all in stock

    A post 86 Signal Red Full House – 300SL, 420SL, 500SL and 560SL all in stock

    March 12th, 2021
  • Andrew Frankel on the iconic R107 SL

    Andrew Frankel on the iconic R107 SL

    March 10th, 2021
  • SLSHOP restored R107 SL displayed at Mercedes-Benz World Brooklands

    SLSHOP restored R107 SL displayed at Mercedes-Benz World Brooklands

    March 5th, 2021
  • How to raise and lower your Mercedes-Benz SL R107 Soft top

    How to raise and lower your Mercedes-Benz SL R107 Soft top

    March 4th, 2021
  • How to safely remove your Mercedes-Benz SL R107 Hard top

    How to safely remove your Mercedes-Benz SL R107 Hard top

    March 4th, 2021
  • How to read a Mercedes-Benz R107 SL VIN plate

    How to read a Mercedes-Benz R107 SL VIN plate

    March 4th, 2021
  • Light it Up: Hard to find Headlamps for the R107 SL

    Light it Up: Hard to find Headlamps for the R107 SL

    March 4th, 2021
  • The ultimate classic Mercedes-Benz SL showroom… 8x Pagodas at SLSHOP 26th Feb 2021

    The ultimate classic Mercedes-Benz SL showroom… 8x Pagodas at SLSHOP 26th Feb 2021

    March 1st, 2021
  • High Times for Low Miles – Surge in demand for the very best

    High Times for Low Miles – Surge in demand for the very best

    February 19th, 2021
  • What has an Austin Montego Vanden Plas got to do with a Mercedes-Benz 500SL…?

    What has an Austin Montego Vanden Plas got to do with a Mercedes-Benz 500SL…?

    February 18th, 2021
  • Silver and Red across two generations of SL

    Silver and Red across two generations of SL

    February 17th, 2021
  • ‘they don’t make em like they used to’ – A tale of three boot locks

    ‘they don’t make em like they used to’ – A tale of three boot locks

    February 16th, 2021
  • The SLSHOP Needs You! – Vehicle Technician Vacancies

    The SLSHOP Needs You! – Vehicle Technician Vacancies

    February 12th, 2021
  • The SLSHOP Needs You! – Service Advisor Vacancy

    The SLSHOP Needs You! – Service Advisor Vacancy

    February 12th, 2021
  • Limited Edition Parts Catalogue

    Limited Edition Parts Catalogue

    February 11th, 2021
  • Three new Mercedes-Benz SLs in the showroom

    Three new Mercedes-Benz SLs in the showroom

    February 5th, 2021
  • SLSHOP takes the lead celebrating 50 Years of the Mercedes-Benz R107 SL

    SLSHOP takes the lead celebrating 50 Years of the Mercedes-Benz R107 SL

    February 4th, 2021
  • See it, Snap it, Share it – How you can get behind the wheel of our 50th Anniversary SL

    See it, Snap it, Share it – How you can get behind the wheel of our 50th Anniversary SL

    February 4th, 2021
  • The R107 SL: Where have all the colours gone?

    The R107 SL: Where have all the colours gone?

    February 2nd, 2021
  • The Market in Brief – A review of 2020 and what to look forward to in 2021

    The Market in Brief – A review of 2020 and what to look forward to in 2021

    February 1st, 2021
  • Exactly the same, completely different… A look at 5x Signal Red 300SLs

    Exactly the same, completely different… A look at 5x Signal Red 300SLs

    February 1st, 2021

CARE membership plans

 Join Our Family

Improve your SL

Increase the value it brings you

For every SL owner we have met, the key aspect in ownership and running these amazing motorcars is ensuring that this prized possession remains a joy to use whenever, wherever and however; protecting and increasing its value over time.

As the World’s largest specialist in classic SL’s we have drawn upon our experience with our customers, with hundreds of cars and thousands of hours behind the wheel and under the ramp to develop CARE; a way of engaging a community of owners and protecting the value of their investments as well as enhancing their cars condition, reliability and desirability.

Discover More

CLASSIC

Would you like to be a little more involved with your car and the marketplace? It’s easy to be a member and join our community. CLASSIC gives you access to an extensive range of benefits without the commitment of a service plan.

COMPLETE

The importance of a correctly maintained classic cannot be understated when it comes to the eventual sale of your asset. COMPLETE membership adds a Service & Maintenance programme specifically designed around your usage.

CONCIERGE

Time poor? You’ll like the idea of CONCIERGE. We will collect and deliver your SL, or provide a premium experience at point of service that includes an overnight stay on us as well as access to our market expertise.

Be the First to Know

We don’t mind whether you are in the market for one of our awesome cars or just interested in seeing whats new and whats going on in the market. Pop your details in here to receive updates on all thats “hot” in the showroom.

Contact

What are you waiting for? Drop us a line and let us know which car you would like to hire and when you would like it. We’ll guide you through everything from there on in.

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

    More From SLSHOP

    Experience
    Owner Services
    Parts Store
    CARE

    Contact SLSHOP Showroom

    Whatever your Mercedes-Benz, Whatever your needs are, Let the SLSHOP help you. It all starts with getting to know you and your needs. We have designed this contact form to be quick and easy and we never share your data.

      This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

      Contact

      Location

      T:01789 337 070

      [email protected]

      SLSHOP

      Unit 1a, 2, 3, & 4b Drayton Manor Drive
      Stratford Upon Avon, Warwickshire
      CV37 9RQ

      Hours:
      Mon-Fri 9:00am – 5:00pm
      Saturday by appointment only
      Closed Sunday

       

      Services

      • Showroom
      • Owner Services
      • Experience
      • Parts Store
      • Additional Services

      SLSHOP

      • We Are SLSHOP
      • COVID-19 Information
      • Visit or Contact
      • Terms
        • Part Sales Terms
        • Car Sales Terms
        • CARE TERMS & CONDITIONS
        • UK Event & Experiences TERMS & CONDITIONS
        • Hire Terms
        • Gift Voucher Terms
      • Privacy & Cookie Policy

      Connect

      Join the SLSHOP family. We know you won’t want to miss out.