The RENNTech by CSF OEM+ radiator is a 100% aluminum, TIG-welded upgrade for the R129 V12 cooling system. Its 2-row 42mm core uses CSF's exclusive B-Tube technology, which CSF rates at roughly 15% more heat transfer than conventional oval welded tubes, paired with 6.5mm multi-louvered fins (versus 6mm OE) for more heat exchange surface area and better airflow. An integrated 5-plate transmission oil cooler, CNC-machined mounting brackets, and OEM-style inlet and outlet connections give a true drop-in installation with no modifications. Each unit is individually leak and pressure tested and finished in satin black and silver.
Specifications
| Type | All-aluminum performance radiator (RENNTech by CSF OEM+) |
| Core | 2-row, 42mm, CSF B-Tube technology |
| Fins | 6.5mm multi-louvered (OE 6mm) |
| Transmission Cooler | Integrated 5-plate oil cooler in side tank |
| Material | 100% aluminum, TIG-welded |
| Finish | Satin black and silver |
| Quantity | 1 |
| Part Number | 7240 |
| Warranty | 2-year limited (CSF) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1993 | Mercedes-Benz | 600SL | Base |
| 1994-2001 | Mercedes-Benz | SL600 | Base |
| 1995 | Mercedes-Benz | SL72 AMG | Base |
| 1996-1997 | Mercedes-Benz | SL70 AMG | Base |
| 1997-2001 | Mercedes-Benz | SL73 AMG | Base |
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
