Saab built its identity on the turbocharger and then vanished in 2011, leaving every owner without a dealer network. Boost Lab, Inc. rebuilds the whole Saab turbo lineage: the pioneering 99 Turbo and classic 900 Garrett T3s, the 9000 and Aero-era Mitsubishi TD04HL-15T under 49189-01700 and -01800, the base 9-3 and 9-5 Garrett GT17 452204 family, and the later 9-3 TD04L-14T. Saab left; the hardware is still ours to fix. Nationwide ship-in service.
From the 1978 car that put turbocharging on the map to the last GM-era 9-3s, one thread runs through every Saab: the turbo is the identity. Match yours by era.
The 99 Turbo did more than any car to convince the world that turbocharging belonged on daily drivers, wastegated boost on a practical Swedish sedan. Surviving units are 45-year-old Garrett T3s with collector significance, and we treat them accordingly: documented rebuilds, preserved castings.
The definitive Saab. Early cars ran oil-cooled T3s; mid-80s cars gained water-cooled center sections that dramatically improved turbo life, and the 16-valve and SPG cars pushed the program to 175 hp. Classic 900 cores arrive with high mileage and decades of heat cycles, and nearly all rebuild.
The 9000 straddled two turbo suppliers: Garrett units on earlier and base cars, and the Mitsubishi TD04HL-15T arriving with the hot Aero, 49189-01700 on 1993-1998 cars. The 9000 Aero was among the fastest sedans of its decade and its TD04 is the direct ancestor of every later Aero unit.
The performance flagship unit: TD04HL-15T under 49189-01800, Saab OEM 9172180 and 55559825, on the Viggen (B235R), 9-3 Aero and 9-5 Aero. Water and oil cooled, wastegated, and famously capable of embarrassing much more expensive cars. CHRA 49189-08525/08526, repair kits 49189-80010 and -84000.
The volume unit: Garrett GT17, catalog 452204-1 through -5. The trap: 452204-1 through -4 (mostly 1997-2001) lack the heat shroud between bearing housing and turbine shaft, while 452204-5 (2002-2003) carries it, and cartridge details differ. The dash number on your tag governs the parts.
The Epsilon-platform 9-3 moved to the TD04L-14T under 49377-06500, -06501 and -06502, Saab OEM 55562670, 55564941 and 55565831, on Linear, Arc, Vector and early Aero 2.0T cars. The last mainstream Saab turbo before the lights went out, and fully supported on our bench.
Saab's 2011 collapse orphaned the cars but not the hardware: every Saab turbo is a Garrett or Mitsubishi unit from families that remain fully supported. The trap is ordering by model name instead of tag, especially in the GT17 family where 452204-1 through -4 and 452204-5 carry different cartridge details, and in the TD04 family where the 15T and 14T look similar and share nothing. Photograph your tag and send it through the repair form before ordering anything, from us or anyone else.
Verified Mitsubishi and Garrett catalog numbers with Saab OEM crosses. Search by any number.
| Turbo PN | Model | OEM PN | Application | Notes |
|---|---|---|---|---|
| 49189-01800 | MHI TD04HL-15T | Saab 9172180, 55559825 | 1999-2005 9-3 Viggen/Aero, 9-5 Aero (B205R/B235R) | Also tagged -01810 / -01830; the Aero unit |
| 49189-01700 | MHI TD04HL-15T | Verify by tag | 1993-1998 9000 Aero | Earlier 15T; ancestor of the -01800 |
| 49189-08525 / -08526 | TD04HL-15T CHRA | n/a | Aero / Viggen center cartridge | Repair kits 49189-80010, 49189-84000 |
| 452204-1 to 452204-4 | Garrett GT17 / GT1752 | Saab dealer channel | 1997-2001 base 9-3, 9-5 four-cylinder | No heat shroud behind bearing housing |
| 452204-5 | Garrett GT17 / GT1752 | Saab dealer channel | 2002-2003 base 9-3, 9-5 | Heat-shroud revision; cartridge details differ |
| 49377-06500 / -06501 / -06502 | MHI TD04L-14T | Saab 55562670, 55564941, 55565831 | 2003-2006 GM-era 9-3 2.0T (Linear/Arc/Vector/Aero) | Do not confuse with the 15T |
| Tag-specific | Garrett T3 (oil-cooled) | Verify by tag | 1978-1980 99 Turbo, early classic 900 | Collector-significance units; documented rebuilds |
| Tag-specific | Garrett T3 (water-cooled) | Verify by tag | Mid-80s to 1993 classic 900 Turbo, SPG | Water cooling transformed turbo life on these |
| Tag-specific | Garrett / MHI by trim | Verify by tag | 1985-1993 9000 non-Aero | Supplier varies by year and market |
| Tag-specific | Big 15T / 19T-class hybrids | n/a (upgrade) | Tuned Aeros and Viggens | Common community upgrades; rebuilt and balanced |
High-mileage daily drivers from a dead brand: the patterns are consistent across eras.
The 9-5's B235 is infamous for oil sludge, and the turbo is the first victim: the feed line and banjo screens clog, the bearings starve, and the 15T dies for the engine's sins. Every 9-5 rebuild conversation includes the sludge question, and the feed line gets replaced or cleaned with the turbo, no exceptions.
The base GT17s run hard in small housings, and the pre-shroud 452204-1 through -4 units show more heat distress at the turbine end than the revised -5. Bearing wear and seal leaks at high mileage are the standard presentation, and all rebuild routinely.
Quarter-million-mile classic 900s are normal, and their T3s arrive with honest wear: shaft play, hardened seals, coked centers on the early oil-cooled units. Water-cooled cores generally arrive healthier, proof of how much that change mattered.
The Saab tuning scene has been raising boost since the Trionic era, and stock 15T thrust bearings pay for it. Uprated thrust parts are standard on our performance rebuilds, with an honest talk about the 15T frame's limits for your power goal.
More Saabs park every year as owners wait out the parts hunt. Storage hardens seals, and the classic symptom is startup smoke that clears. A reseal with modern materials returns most of these units to daily service.
The TD04L-14T and TD04HL-15T look alike and share almost nothing, and we regularly open units carrying mismatched parts from that confusion, plus GT17s built with the wrong dash-number cartridge. The tag governs; we put them right and balance every assembly.
Yes, indefinitely. Every Saab turbo is a Garrett or Mitsubishi unit from families with strong ongoing parts support: the TD04 and GT17 lines especially. The brand died; the hardware ecosystem did not.
The 1999-2005 Viggen, 9-3 Aero and 9-5 Aero run the Mitsubishi TD04HL-15T under 49189-01800 (Saab 9172180 / 55559825); the 1993-1998 9000 Aero runs the earlier -01700. The tag on the compressor housing confirms it.
Usually yes, the housings and wheels typically survive oil starvation, and the bearings and seals are what a rebuild replaces anyway. But the engine-side sludge problem must be fixed first, and the feed line replaced, or the rebuilt unit dies the same death.
Garrett revised the GT17 around 2002: 452204-1 through -4 lack the heat shroud between the bearing housing and turbine shaft, and 452204-5 carries it, with differing cartridge details. Order parts by the dash number on your tag, never by 'GT17' alone.
Yes, the common big-15T and 19T-class hybrids on the stock frame all rebuild, balanced, with uprated thrust parts for boosted cars. Send tag and wheel photos through the repair form first.
Start at repair.theboostlab.com, photograph the tag, drain the oil and coolant passages, cap the openings, and double-box. Ship to Boost Lab, Inc., 37833 Pineapple Ave, Unit A, Dade City, FL 33523. We serve Saab owners nationwide.