The R129 Co

The R129 Co 🚗 For enthusiasts, by enthusiasts 🚗 Sacco Era Specialists ✨ Rare parts & expert services for your modern classic Mercedes Benz. www.r129.co

UK-based team of auto enthusiasts selling parts and products for Mercedes-Benz luxury vehicles. Including: R129 SL, R107 SL, R230 SL, W140 and W215.

19/06/2026

We often see comments online about “biodegradable wiring” on the R129, so we wanted to shed some light on this widely misunderstood issue. ⚡️

In reality, only around 25-30% of R129s produced were affected by this manufacturing blunder - and even then, it is absolutely not a death sentence for the car.

For most affected models, it is a straightforward, one-time fix that properly future-proofs the car. ✅

Unsure whether your R129 is affected? DM us your VIN and we’ll be happy to advise. We also have a detailed blogpost on the matter on our website.

Need the work carried out? DM, call, or email us to book in. We carry out scores of these wiring repairs every year.

Don’t be put off by this if you want to buy one of these cars - it’s no rod bearing failure @ 60k miles 👀 😷

For Enthusiasts, By Enthusiasts.

📩 DM us
🌐 r129.co
✉️ [email protected]

17/06/2026

Harry takes out a customers 1998 SL 60 AMG and offers some thoughts and buyers advice. This beautiful example with just 26k miles has been with us primarily for suspension work amongst other jobs. This is a creme de la creme genuine AMG R129 in right hand drive, one of the most sought after and prized R129 SLs available, outside of the unicorns 🦄

16/06/2026

This 1995 SL 500 with genuine factory fitted Gen 1 AMG bodystyling came to us for some recommission work having been stood for several years. Wiring renewal and a new throttle body were key parts of the equation, now running beautifully.

Incredibly rare front bumper now repaired, the owner will be fitting its original 3 piece AMG wheels for summer usage.

Not a concours car, and somewhat of a high mileage hero at approx. 170k miles, but plenty of life left yet for this old girl.

For enthusiasts, by enthusiasts.

09/06/2026

A common culprit for a top end tick like this on M119 powered vehicles is the hydraulic tappet oil feeders (the plastic type). These feed tubes can get blocked with oil sludge or sometimes fail altogether, starving the cam area of proper lubrication and creating that unmistakable tapping noise. In this case, one had blown apart - so we replaced the failed tube, cleaned the rest, renewed the valve cover seals, irradicating the noise and restoring optimal lubrication.

Many M119 owners swap these out to the superior early aluminium type, a solid upgrade if you encounter this problem.

For Enthusiasts, By Enthusiasts
📩 [email protected]
🌍 r129.co

This is a superb 199 Blue Black R129 SL 600, sent to us from Switzerland for a long standing ASR fault that had evaded a...
05/06/2026

This is a superb 199 Blue Black R129 SL 600, sent to us from Switzerland for a long standing ASR fault that had evaded a proper fix for years. This is one of the best pre facelift V12s we’ve seen, even though the miles are relatively high, the underside is as good as they get and the car is now running and driving beautifully. Mileage doesn’t dictate the quality of these cars folks!

As is often the way with V12 R129s, the fault wasn’t just one simple smoking gun. It was multi-faceted, but the core issue was traced to a faulty potentiometer on the master throttle body.

This is exactly the sort of problem solving we enjoy most. Owner has just flown in to collect the car, and has a lovely continental drive ahead.

SaccoEra BlueBlack MercedesClassic TheR129Co

Workshop Catch-Up. A few of the Sacco-era cars currently moving through the workshop.1️⃣ 348 Pearl Blue 1993 SL 500One o...
22/05/2026

Workshop Catch-Up. A few of the Sacco-era cars currently moving through the workshop.

1️⃣ 348 Pearl Blue 1993 SL 500
One of ours. One-owner, 73k miles, and now being prepped for sale. A lovely original R129.

2️⃣ 366 Azurite Blue 1994 S 500 Coupé
A beautiful C140 in for engine diagnostics, electrical gremlins and servicing. Hesitation under load, so we’re working through the usual suspects.

3️⃣ 199 Blue Black 1994 SL 500
Another of our own cars. 126k miles, beautifully running LH-Jetronic M119, now into cosmetic fettling before sale.

4️⃣ 199 Blue Black 1994 SL 600
A gorgeous V12 sent from Switzerland for a long-standing ASR fault. Solved within a few hours, now into cosmetic work. One of the best maintained V12 R129s we’ve seen.

5️⃣ 199 Blue Black 1994 SL 500
A long-sat revival project with genuine pre-facelift AMG styling. Wiring is going back on and we’re hoping to have it running properly before handover.

6️⃣ 582 Imperial Red 1997 SL 500
Back with us after a couple of years for catalytic converter work, servicing, electrical jobs and cosmetic touch-ups.

7️⃣ 172 Anthracite Grey 1991 500 SL
A big multi-phase Irish car. Now running superbly, new soft top fitted, and just a few cosmetic jobs left.

8️⃣ 702 Smoke Silver 1991 300 SL-24
Another of ours. 87k miles, beautifully presenting and driving, now almost fully original again and nearly ready for sale.

9️⃣ 199 Blue Black 1994 SL 320
Sent from Ireland with a proper list: wiring renewal and assorted electrical gremlins.

🔟 199 Blue Black 1992 500 SL
Another Irish car. Early KE-Jetronic example, with hot running issues now under diagnosis.

1️⃣1️⃣ 366 Azurite Blue 1997 S 600 L
A long-standing W140 revival. The M120 V12 is now purring smoothly, with oil leak and steering work next. King of the road.

1️⃣2️⃣ 366 Azurite Blue 1998 SL 60 AMG
Ultra-low mileage genuine AMG car. Now 30mm lower, roof fixed, and a little chassis fettling left before alignment.

Workshop bookings now being taken for late July and early August.

20/05/2026

Some insight into the Workshop arm of our business.

Video credit:

Are you struggling to find a specialist technician with the knowledge and skills to fix your R129? You can arrange to visit The R129 Co here in Kent to have your Mercedes Benz R129 SL worked on by our specialist in-house team. We’re also taking bookings for most 90s era Mercedes Benz models: W140, C140, W124, A124, C124, W201 and more.

Whatever problem you’re facing, don’t hesitate to contact us.

Go to: www.r129.co

🚚 Same day dispatch cutoff: 15:00 GMT / 10:00 EST
🇬🇧 UK: Next day delivery
🇪🇺 Europe: 2-5 days and no import costs under £130
🇺🇸 USA: 2-5 days
🌏 Worldwide: 3-9 days
🔐 Standard 3 month warranty + 1 month returns
🗣 Professional and knowledgeable support team

Support & Fitment Advice
• Open: Monday to Friday 09:00-17:00 (GMT)
• WhatsApp (message only): +44 7377 667 899
• Telephone: +44 1580 291 222
• Email: [email protected]

15/05/2026

Another very pretty Brilliant Silver R129 SL that was recently with us for wiring renewal and some other fiddlies sorted:

• Upper engine wiring harness replaced
• Lower harness replaced
• Throttle body wiring rebuilt
• Rev counter fixed
• Bonnet insulation replaced
• Wiper motor replaced

Cars affected by the biodegradable wiring insulation issue are not as daunting as many make out, deal with it preventatively and comprehensively in one go - job done.

14/05/2026

For Enthusiasts, By Enthusiasts.

Parts and services for your modern classic Mercedes-Benz.

Here at The R129 Co we stock hard-to-find genuine OE and OEM parts for the best of the Mercedes-Benz youngtimer era and beyond, including: R129 SL, R107 SL, R230 SL, W140, W204, W205, W215, W460 and more.

Every pre-owned part is tested, cleaned, photographed clearly, and catalogued properly — with fitment advice available before you order.

Our listings are accurate. Our stock is professionally handled. Our support team know and love the cars.

With a formidable track record and hundreds of consistent 5-star reviews, The R129 Co is trusted worldwide by owners who want it done right — first time.

🛠 Need help? Message us.
📦 Ready to ship, same-day.

Go to: www.r129.co

🚚 Same day dispatch cutoff: 15:00 GMT / 10:00 EST
🇬🇧 UK del: Next day
🇪🇺 Europe: 2-5 days and no import costs under £130
🇺🇸 USA: 2-5 days
🌏 Worldwide: 3-9 days
🔐 Standard 3 month warranty + 1 month returns
🗣 Professional and knowledgeable support team

Support & Fitment Advice
• Open: Monday to Friday 09:00-17:00 (GMT)
• WhatsApp (message only): +44 7377 667 899
• Telephone: +44 1580 291 222
• Email: [email protected]

Hi all, The R129 Co has some original used 129 parts which you might find interesting! DM us with any requested parts. A...
15/12/2025

Hi all, The R129 Co has some original used 129 parts which you might find interesting! DM us with any requested parts. Always here to provide fitment support too. No import costs to USA/Europe under £130. Express worldwide shipping. We are based in the UK and the majority of our items are dispatched same day.

⭐️⭐️⭐️⭐️⭐️ (4.9 stars on Google) Read our excellent reviews 👉 https://shorturl.at/acyJN

If you can't find a part on our website (www.r129.co) then DM us with your email, VIN number and the part you require (or the part number only if known), and I'll add you to our waiting list. You'll be emailed as soon as the part is back in stock.

• Mercedes 1294402911 Instrument Cluster (a) | R129 SL
£245.99 - https://r129.co/products/mercedes-1294402911-instrument-cluster-a-r129-sl.html

• Mercedes 1298000874 Roof Hydraulic Lock - Front Right | R129 SL
£189.99 - https://r129.co/products/mercedes-1298000874-roof-hydraulic-lock-front-right-r129-sl.html

• Mercedes 1296800391 Spectacle Glovebox - Brown | R129 SL
£194.99 - https://r129.co/products/mercedes-1296800391-spectacle-glovebox-brown-r129-sl.html

• Mercedes 1292671710 Gear K**b - Tan | R129 SL
£104.99 - https://r129.co/products/mercedes-1292671710-gear-knob-tan-r129-sl.html

• Mercedes 2028301385 HVAC Control Unit (b) | R129 SL
£374.99 - https://r129.co/products/mercedes-2028301385-hvac-control-unit-b-r129-sl.html

• Mercedes 1298201766 Dome Light Lens - Left | R129 SL A124 E
£84.99 - https://r129.co/products/mercedes-1298201766-dome-light-lens-left-a124-e-r129-sl.html

• And more at https://r129.co/

🚚 Same day dispatch cutoff: 15:00 GMT / 10:00 EST
🇬🇧 UK del: Next day
🇪🇺 Europe: 2-5 days and no import costs under £130
🇺🇸 USA: 2-5 days
🌏 Worldwide: 3-9 days
🔐 Standard 3 month warranty + 1 month returns
🗣 Professional and knowledgeable support team

Support & Fitment Advice
• Open: Monday to Friday 09:00-17:00 (GMT)
• WhatsApp (message only): +44 7377 667 899
• Telephone: +44 1580 291 222
• Email: [email protected]

Please note that comments are disabled on this post as we only conduct business directly with our customers. Please call or email for assistance.

Reviews
✅ 'I use the company whenever I need a part. The R129 Co take your number, find you the part on the same day, whenever possible, and call you back the same day. Paid, dispatched and with you in a couple of days'
✅ 'When you purchase a used part from any company, much less one that is located across the pond, you wonder what is going to go wrong. Nothing did.'
✅ 'It took only 3 days from payment to delivery (UK to Malaysia). Unbelievably impressive. Part arrived and installed. Thank you.'
✅ 'Just about the only reliable supplier I have for parts for my car. Always helpful, courteous, efficient and unlike so many others use a reliable courier service ensuring delivery. Been using them for many years and will continue to do so. In today's world it is exceptional to get such service that can be relied upon.'
✅ 'Very efficient and friendly service! Cannot thank Harry enough for his knowledge and help! Comes back with all questions asked and will go that extra mile to help you.'

Address

Biddenden
TN278DT

Opening Hours

Monday 8am - 6pm
Tuesday 8am - 6pm
Wednesday 8am - 6pm
Thursday 8am - 6pm
Friday 8am - 6pm

Telephone

+441580291222

Alerts

Be the first to know and let us send you an email when The R129 Co posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Share