Premerger AMG R129 Exhaust System
Original HWA-Stamped AMG Muffler + Mid-Section Resonator • Fits 1990–2002 SL V8
Offered for sale is a genuine premerger AMG exhaust system designed for the Mercedes-Benz R129 SL-Class. This setup includes both the AMG rear muffler with engraved chrome tips and the matching AMG mid-resonator section, manufactured during the early-to-mid 1990s prior to AMG’s full merger with Mercedes-Benz.
Featuring correct HWA factory part numbers and period-correct AMG tips, this exhaust is a rare and authentic performance upgrade for enthusiasts seeking originality and proper fitment on V8-powered R129 models.
Authentic AMG Rear Muffler
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Factory-stamped AMG HWA129 490 0221 on the housing
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Twin rolled chrome tips with mid-90’s “AMG” engraving
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Original finish, no reproduction markings
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Designed specifically for R129 performance tuning by period AMG
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One outlet shows a small crease on the underside (cosmetic only)
AMG Mid-Resonator / Center Section
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Correct matching AMG / Mercedes factory part number: 1294910801
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Designed to pair with the correct AMG muffler
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Maintains proper back-pressure balance for M119/M113 V8 engines
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Authentic construction ensures tone and fitment superior to aftermarket replicas
Fitment
This premerger AMG exhaust will fit the following models equipped with V8 engines:
| Model | Years | Engine |
|---|---|---|
| SL500 | 1990–2002 | M119 / M113 |
| SL600* | 1990–2002 | M120* (fitment possible, slight modification may be required) |
*SL600 installation may require bracket adjustment depending on year.
Why This AMG Exhaust Is Desirable
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True Premerger Production: Original AMG HWA stamping verifies manufacturing before the Daimler integration.
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Correct Period Sound: Provides the deep, refined AMG tone of 90’s SL roadsters—civil at idle, throaty under throttle.
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Rare Engraved Tips: Features the mid-90s AMG script, not the later laser or stamped logo styles.
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Perfect for OE+ Restorations: Required piece for authentic AMG-era builds, especially SL500 AMG and SL60 AMG conversions.
Included in the Sale
| Component | Details |
|---|---|
| AMG Rear Muffler | HWA129 490 0221 stamping, dual engraved tips |
| Mid Resonator | AMG/Mercedes stamped, part number 1294910801 |
| AMG Tips | Chrome rolled outlets with 90s AMG engraving |
Condition Notes
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Previously installed and used
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Chrome tips show surface marks; one tip has a crease on the bottom
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No cracks, rust-through, or structural compromise
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All factory hangers intact and ready for installation
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