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1.8L 20VT
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1.8L 20VT
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Set of 10 tri-metal crankshaft main bearing shells for VAG 1.8 / 2.0 8V 16V and 1.8T 20V.
This main bearing set fits the Volkswagen Group four-cylinder engines of 1.8 and 2.0 litres with 8 and 16 valves, as well as the 1.8 T turbocharged 20-valve engine. It fits, among others, the Volkswagen Golf, Jetta, Passat, Corrado and Scirocco, the Audi A3, A4, A6 and TT, the Seat Ibiza, Leon and Toledo and the Skoda Octavia. ACL and King list a main bearing set for these engines.
The crankshaft of these engines runs on five main bearings. Each journal turns between two half shells, one seated in the block and the other in the main bearing cap: they carry the crankshaft. The ACL Race Series and KING RACING tri-metal sets shown here replace them on built engines.
A tri-metal bearing stacks three layers: a steel back, a copper-lead intermediate layer with high load capacity and an anti-friction running surface that protects the journal. The complete set contains 10 half shells, five pairs for five main bearings. The upper and lower half shells are different: each goes in its own position. ACL specifies that the full groove is only on position 4 and that this set requires thrust washers.
An aluminium bi-metal takes around 8,000 psi, a performance tri-metal up to 12,000 psi, 50% more. Hence better resistance and better durability on turbocharged, supercharged and high-revving engines.
| ACL bearings Crankshaft journal Ø 53.958 / 53.978 mm Housing bore Ø 59.000 / 59.019 mm Width 18.49 mm | King bearings Crankshaft journal Ø 53.96 / 53.98 mm Housing bore Ø 59.00 / 59.02 mm Width 18.5 mm |
Manufacturer's note (ACL 5M1644H): full groove on position #4 only. Requires thrust washers.
| Reference | Brand and treatment | Size | Wall thickness (mm) |
|---|---|---|---|
| 5M1644H-STD | ACL Race - Untreated | Standard | 2.502 |
| 5M1644HX-STD | ACL Race - Untreated | Std, increased clearance (HX) | 2.502 |
| 5M1644H-.025 | ACL Race - Untreated | +0.025 | 2.5145 |
| 5M1644H-.25 | ACL Race - Untreated | +0.25 | 2.627 |
| 5M1644H-.50 | ACL Race - Untreated | +0.50 | 2.752 |
| 5M1644HC-STD | ACL Race - Calico | Standard | 2.502 |
| 5M1644HXC-STD | ACL Race - Calico | Std, increased clearance (HX) | 2.502 |
| 5M1644HC-.25 | ACL Race - Calico | +0.25 | 2.627 |
| MB5566XP | King Racing - Untreated | Standard | 2.499 |
| MB5566XP STDX | King Racing - Untreated | Std, increased clearance (STDX) | 2.486 |
| MB5566XP0.25 | King Racing - Untreated | +0.25 | 2.626 |
| MB5566XPC | King Racing - pMaxKote | Standard | 2.499 |
| MB5566XPC STDX | King Racing - pMaxKote | Std, increased clearance (STDX) | 2.486 |
| MB5566XPC0.25 | King Racing - pMaxKote | +0.25 | 2.626 |
The running clearance is the gap between the bearing and the journal where the oil film flows.
In operation, the crankshaft journal does not rub against the bearing: it rides on this oil film, which carries the load. Clearance sets the thickness of this film: too tight, oil flows poorly, temperature rises and the risk of seizure increases; too loose, oil escapes, the film loses load-carrying capacity and oil pressure drops. The right clearance is the balance between adequate lubrication and a well-maintained oil film.
| Size / grade | When to choose it | ACL Race Series | King XP and XPC |
|---|---|---|---|
| Standard (STD) | Standard journal, not reground | 0.056 to 0.067 mm | 0.054 mm - 0.067 mm |
| Increased clearance (HX / STDX) | Wider clearance: high oil flow, high rpm | 0.081 to 0.092 mm | 0.079 mm - 0.092 mm |
| +0.025 / +0.026 mm | Polished journal | 0.056 to 0.067 mm | 0.054 mm - 0.067 mm |
| +0.25 mm | Journal reground to 0.25 mm | 0.056 to 0.067 mm | 0.054 mm - 0.067 mm |
| +0.50 mm | Journal reground to 0.50 mm | 0.056 to 0.067 mm | 0.054 mm - 0.067 mm |
Check at assembly: lay a calibrated strip (Plastigauge) on the journal, tighten the main cap following the manufacturer's procedure, then compare the width of the crushed strip with the gauge to read the clearance.
The ACL and King main bearings shown here are trimetal bearings, designed for engine building and racing. Compared with an original bearing, they handle far higher loads: they cope with increased power, high rpm or the addition of a turbo or supercharger, where a standard bearing quickly reaches its limit.
 | ACL Bearing Company, an Australian manufacturer of high-performance engine bearings since 1949, offers with its Race Series precise tri-metal bearings, available in many sizes and proven on built engines worldwide. |
 | King Engine Bearings, an Israeli manufacturer of high-performance engine bearings since the 1960s, offers with its pMax Black tri-metal alloy bearings designed for heavy loads, with a pMaxKote coating (XPC version). |
| Criterion | ACL Race Series | King Racing |
| Cross-section |  |  |
| Type | High-performance trimetal bearing | High-performance trimetal bearing |
| Country of manufacture | Australia | Israel |
| Construction | Trimetal: steel back, copper layer, soft surface | Trimetal: steel back, copper layer, soft surface |
| Alloy | Race Series (copper-lead) | pMax Black (hardened copper-lead) |
| Protective coating | Calico CT-1 (HC and HXC versions): thin dry-film lubricant that reduces friction and wear. No coating on the H and HX versions. | pMaxKote (XPC version): polymer coating on the surface that limits wear when lubrication drops (start-ups, thin oil film). The XP version has no coating. |
| Available sizes | Standard to +0.50 mm (+ increased clearance HX) ; Calico: standard, HXC and +0.25 mm | Standard to +0.50 mm (+ increased clearance STDX) ; XPC: standard, STDX and +0.25 mm |
This main bearing set fits the VAG 1.8 and 2.0 8V / 16V and 1.8T 20V four-cylinder engines of the following vehicles:
| Brand | Model (chassis) | Engine code | Power | Years |
|---|---|---|---|---|
| AUDI | 100 C1 Saloon (801, 803, 805, 807, 811, 813, F104) 1.8 / 1.6 | YM, ZV | 80–85 hp | 1968–1976 |
| AUDI | 100 C2 Avant (435, 436) 1.6 | YV | 85 hp | 1977–1983 |
| AUDI | 100 C2 Saloon (431, 433, 434) 1.6 | YV | 85 hp | 1976–1982 |
| AUDI | 100 C3 Avant (445, 446) 1.8 / 1.8 quattro / 1.8 Cat / 1.8 Cat quattro | 4B, DR, DS, JW, NP, PH, RS, SH | 75–90 hp | 1982–1990 |
| AUDI | 100 C3 Saloon (443, 444) 1.8 / 1.8 quattro / 1.8 Cat / 1.8 Cat quattro | 4B, DR, DS, JW, NP, PH, RS, SH | 75–90 hp | 1982–1990 |
| AUDI | 100 C4 Avant (4A5) 2.0 E 16V / 2.0 E 16V quattro / 2.0 E / 2.0 E quattro | AAD, AAE, ABK, ACE | 100–140 hp | 1990–1994 |
| AUDI | 100 C4 Saloon (4A2) 2.0 E 16V / 2.0 E 16V quattro / 2.0 / 2.0 E / 2.0 E quattro | AAD, AAE, ABK, ACE | 100–140 hp | 1990–1994 |
| AUDI | 80 B1 Avant (331) 1.6 | YK | 79 hp | 1975–1976 |
| AUDI | 80 B1 Saloon (80, 82) 1.6 GTE / 1.6 GT / 1.6 / 1.5 | XW, XX, YJ, YN, YP, YS, ZB, ZC | 75–110 hp | 1972–1978 |
| AUDI | 80 B2 Saloon (811, 813, 814, 819, 853) 1.8 / 1.6 / 1.8 CC quattro / 1.8 GTE / 1.8 GTE quattro / 1.7 / 1.6 GLE / 1.3 | DS, DT, DZ, EP, JN, JU, JV, NE, PV, SF, WT, WV, YK, YN, YP, YT, YZ | 60–112 hp | 1978–1987 |
| AUDI | 80 B3 Saloon (893, 894, 8A2) 1.8 S / 1.8 S quattro / 1.8 / 2.0 E / 2.0 E quattro / 1.6 / 2.0 E 16V / 2.0 E 16V quattro / 2.0 quattro / 1.8 E / 1.8 E quattro / 1.8 quattro / 1.9 / 1.9 quattro | 3A, 6A, AAD, ABB, DZ, JN, JV, NE, PM, PP, RN, RU, SD, SF | 70–137 hp | 1986–1991 |
| AUDI | 80 B4 Avant (8C5) 2.0 E 16V / 2.0 E 16V quattro / 1.6 E / 2.0 quattro / 2.0 / 2.0 E | ABK, ABT, ACE, ADA, ADW | 90–140 hp | 1992–1996 |
| AUDI | 80 B4 Saloon (8C2) 2.0 E 16V / 2.0 E 16V quattro / 1.6 E / 2.0 quattro / 2.0 / 2.0 E / 2.0 E quattro / 1.6 | 6A, ABK, ABM, ABT, ACE, ADA, ADW | 71–140 hp | 1991–1994 |
| AUDI | 90 B3 (893, 894, 8A2) 2.0 / 2.0 E / 2.0 quattro / 1.8 E | 3A, 6A, DZ | 109–137 hp | 1987–1991 |
| AUDI | A4 B5 (8D2) 1.8 / 1.8 quattro / 1.8 T quattro / 1.8 T / 1.6 | ADP, ADR, AEB, AFY, AHL, AJL, ARM, AWM | 100–180 hp | 1994–2001 |
| AUDI | A4 B5 Avant (8D5) 1.8 / 1.8 quattro / 1.8 T / 1.8 T quattro / 1.6 | ADP, ADR, AEB, AFY, AHL, AJL, ARM | 90–180 hp | 1994–2001 |
| AUDI | A4 B6 (8E2) 1.8 T / 1.8 T quattro | AWM | 170–173 hp | 2001–2004 |
| AUDI | A4 B6 Avant (8E5) 1.8 T quattro | AWM | 173 hp | 2001–2004 |
| AUDI | A6 C4 (4A2) 2.0 16V / 2.0 16V quattro / 2.0 / 1.8 / 1.8 quattro | AAE, ABK, ACE, ADR, ADW | 100–140 hp | 1994–1997 |
| AUDI | A6 C4 Avant (4A5) 2.0 16V / 2.0 16V quattro / 2.0 / 1.8 / 1.8 quattro | AAE, ABK, ACE, ADR, ADW | 100–140 hp | 1994–1997 |
| AUDI | A6 C5 (4B2, 4B4) 1.8 / 1.8 T / 1.8 T quattro | AEB, AFY, AJL | 116–180 hp | 1997–2005 |
| AUDI | A6 C5 Avant (4B5, 4B6) 1.8 / 1.8 T / 1.8 T quattro | AEB, AFY, AJL | 116–180 hp | 1997–2005 |
| AUDI | Cabriolet B3 (8G7) 2.0 16V / 1.8 / 2.0 E | ABK, ACE, ADR | 115–140 hp | 1993–2000 |
| AUDI | Coupe B2 (81, 855, 856) 1.8 GT / 1.6 / 1.8 GT quattro | DS, DZ, JN, JV, PV, SF, YN | 75–112 hp | 1980–1988 |
| AUDI | Coupe B3 (89, 8B3) 2.0 16 V / 2.0 / 1.8 | 3A, 6A, AAD, ABK, ACE, DZ | 112–140 hp | 1989–1996 |
| SEAT | Alhambra (7V8, 7V9) 2.0 i / 1.8 T 20V | ADY, AJH, ATM | 115–150 hp | 1996–2010 |
| SEAT | Cordoba (6K1, 6K2) 1.8 i / 1.6 i / 2.0 i / 2.0 i 16V | 1F, 2E, ABF, ABS, ACC, ADZ, AEE, AFT, AGG | 75–150 hp | 1993–2002 |
| SEAT | Cordoba Vario (6K5) 1.6 i / 1.8 i | 1F, ACC, AEE, AFT | 75–101 hp | 1996–2002 |
| SEAT | Ibiza II (6K1) 1.8 i / 1.6 i / 2.0 i / 2.0 i 16V | 1F, 2E, ABF, ABS, ACC, ADZ, AEE, AFT, AGG | 75–150 hp | 1993–2002 |
| SEAT | Toledo I (1L2) 1.8 i / 1.8 16V / 1.8 GT / 1.6 i / 2.0 i / 2.0 i 16V | 1F, 2E, ABF, ABN, ABS, ACC, ADZ, AFT, AGG, EZ, KR, PL, RP | 71–150 hp | 1991–1999 |
| SKODA | Felicia I (6U1) 1.6 | AEE | 75 hp | 1995–1998 |
| SKODA | Felicia I Estate (6U5) 1.6 | AEE | 75 hp | 1995–1998 |
| SKODA | Felicia I Pick-up (6UF, 6U7) 1.6 | AEE | 75 hp | 1997–2002 |
| SKODA | Felicia II (6U1) 1.6 | AEE | 75 hp | 1998–2001 |
| SKODA | Felicia II Estate (6U5) 1.6 | AEE | 75 hp | 1998–2001 |
| SKODA | Octavia I (1U2) 1.6 | AEE | 75 hp | 1996–2004 |
| SKODA | Octavia I Estate (1U5) 1.6 | AEE | 75 hp | 1998–2004 |
| VW | Bora I (1J2) 2.0 | AVH | 115 hp | 1998–2013 |
| VW | Bora Variant (1J6) 2.0 | AVH | 115 hp | 1999–2005 |
| VW | Caddy I (14) 1.7 / 1.6 / 1.8 | EN, EW, HM, JH | 75–95 hp | 1980–2008 |
| VW | Caddy II MPV (9K9B) 1.6 | 1F, AEE | 75 hp | 1995–2000 |
| VW | Caddy II Pick-up (9U7) 1.6 | AEE | 75 hp | 1996–2000 |
| VW | Citi Golf 1.8 Sport / 1.8 CTI / 1.6 / 1.3 | EP, EV, HM, HV | 60–111 hp | 1984–2003 |
| VW | Corrado (53I) 1.8 16V / 2.0 i 16V / 2.0 i / 1.8 G60 | 2E, 9A, ADY, KR, PG | 115–160 hp | 1988–1995 |
| VW | Fox (16) 1.8 / 1.6 | DX, EV, EZ, HM | 75–112 hp | 1987–1996 |
| VW | Fox Saloon 1.8 | JN | 103 hp | 1987–1990 |
| VW | Fox Variant 1.8 | JN | 103 hp | 1986–1990 |
| VW | Gol G1 1.6 | HM | 80–82 hp | 1985–1994 |
| VW | Golf I (17) 1.7 / 1.6 / 1.8 GTI | DX, EN, EW, HN, JF, JH | 65–112 hp | 1980–1984 |
| VW | Golf I Cabriolet (155) 1.6 / 1.8 / 1.7 | 2H, DX, EN, EV, EW, EX, HN, JH, KT, PB, RE | 72–112 hp | 1980–1993 |
| VW | Golf II (19E, 1G1) 1.8 GTI / 1.8 GTI 16V / 1.8 GTI Cat / 2.0 GTI / 1.6 / 1.8 Syncro / 1.8 / 1.8 GTI G60 / 1.8 GTI G60 Syncro / 1.8 i Cat / 1.8 i Cat Syncro | 1P, 9A, ABN, DX, EV, EZ, EZA, GU, GX, GZ, HM, HT, HV, KR, PB, PF, PG, PL, RF, RH, RP, RV | 69–160 hp | 1983–1992 |
| VW | Golf III (1H1) 1.8 / 1.8 Syncro / 1.6 / 2.0 / 2.0 Syncro / 2.0 GL / 2.0 GTI 16V | 2E, AAM, ABF, ABS, ACC, ADD, ADY, ADZ, AEE, AEK, AEP, AFT, AGG, AKR, AKS | 75–150 hp | 1991–1997 |
| VW | Golf III Cabriolet (1E7) 1.8 / 1.6 / 2.0 | 2E, AAM, ABS, ADY, ADZ, AEK, AFT, AGG, AKR, AKS, ANN, ANP | 75–115 hp | 1993–1998 |
| VW | Golf III Variant (1H5) 1.8 / 1.6 / 2.0 / 1.8 Syncro / 2.0 Syncro | 2E, AAM, ABS, ADY, ADZ, AEK, AEP, AFT, AGG, AKR, AKS, ANN, ANP | 75–115 hp | 1993–1999 |
| VW | Golf IV (1J1) 2.0 | AVH | 115 hp | 1998–2004 |
| VW | Golf IV Cabriolet (1E7) 1.8 / 2.0 / 1.6 | AAM, ADZ, AFT, AGG, AKR, AKS, ANN, ANP, ATU, AWF, AWG | 75–115 hp | 1998–2002 |
| VW | Jetta I (16) 1.7 / 1.6 / 1.8 | DX, EN, EW, JH | 69–112 hp | 1980–1987 |
| VW | Jetta II (19E, 1G2, 165) 1.8 / 1.8 16V / 1.8 Cat / 2.0 / 1.6 / 1.7 / 1.8 Syncro | 1P, 9A, ABN, EN, EV, EZ, GU, GX, GZ, HM, HT, HV, KR, PB, PF, PL, RF, RH, RP, RV | 72–140 hp | 1983–1992 |
| VW | New Beetle (9C1, 1C1) 2.0 | AVH | 115 hp | 1998–2010 |
| VW | Passat B1 (32) 1.6 GLi / 1.5 / 1.6 | YJ, YK, YP, YS, ZB, ZC | 75–110 hp | 1973–1980 |
| VW | Passat B1 Saloon (32) 1.6 | YN | 75 hp | 1973–1977 |
| VW | Passat B1 Variant (33) 1.6 i / 1.6 / 1.5 | YJ, YK, YN, YP, YS, ZB, ZC | 75–110 hp | 1973–1980 |
| VW | Passat B2 (32B) 1.8 / 1.6 / 1.7 / 1.3 | DS, DT, DZ, EP, JN, JV, PP, RL, WT, WV, YN, YP | 60–112 hp | 1979–1988 |
| VW | Passat B2 Saloon (32B) 1.8 / 1.6 | DS, DT, JN, JU, PP, RL | 70–103 hp | 1984–1989 |
| VW | Passat B2 Variant (33B) 1.8 / 1.8 Syncro / 1.6 / 1.7 / 1.3 | DS, DT, DZ, EP, JN, JU, JV, PP, RL, WT, WV, YN, YP | 60–112 hp | 1980–1988 |
| VW | Passat B3/B4 (3A2, 35I) 1.8 / 1.6 / 1.8 16V / 2.0 16V / 2.0 / 2.0 Syncro / 1.8 G60 / 1.8 G60 Syncro | 1F, 2E, 9A, AAM, ABF, ABN, ABS, ADY, ADZ, AEK, AEP, AFT, AGG, EZ, KR, PB, PF, PG, RF, RP | 72–160 hp | 1988–1996 |
| VW | Passat B3/B4 Variant (3A5, 35I) 1.8 / 1.6 / 1.8 16V / 2.0 16V / 2.0 / 2.0 Syncro / 1.8 G60 Syncro | 1F, 2E, 9A, AAM, ABF, ABN, ABS, ADY, ADZ, AEK, AEP, AFT, AGG, EZ, KR, PB, PF, PG, RF, RP | 72–160 hp | 1988–1997 |
| VW | Passat B5 (3B2) 1.8 / 1.8 T / 2.0 / 1.8 Syncro/4motion / 1.6 | ADP, ADR, AEB, AFY, AHL, ARM, AUZ | 101–150 hp | 1996–2000 |
| VW | Passat B5 Variant (3B5) 1.8 / 1.8 T / 2.0 / 2.0 4motion / 1.8 Syncro/4motion / 1.6 | ADP, ADR, AEB, AFY, AHL, ARM, AUZ | 101–150 hp | 1997–2000 |
| VW | Passat B5.5 (3B3) 1.8 T / 1.8 T 4motion | AWM | 170 hp | 2001–2005 |
| VW | Passat B5.5 Variant (3B6) 1.8 4motion / 1.8 T | AWM | 170 hp | 2002–2005 |
| VW | Pointer 1.8 | RP | 88 hp | 1993–1996 |
| VW | Polo III (6N1) 1.6 | AEE | 75 hp | 1994–1999 |
| VW | Polo III Classic (6V2) 1.8 / 1.6 | 1F, ABS, ADD, ADZ, AEE, AFT | 75–100 hp | 1995–2001 |
| VW | Polo Variant (6V5) 1.6 / 1.8 | ADZ, AEE, AFT | 75–101 hp | 1997–2001 |
| VW | Santana (32B) 1.8 / 1.6 / 1.7 / 1.3 | DS, DT, EP, JN, WT, WV, YP | 60–90 hp | 1981–1985 |
| VW | Santana 1.8 / 1.8 GL | JN, JV | 90–92 hp | 1991–1999 |
| VW | Saveiro G1 (147) 1.6 | 1F, EW, HM | 75–82 hp | 1985–1996 |
| VW | Saveiro G2 (9U7) 1.6 | 1F, EW | 75 hp | 1997–2002 |
| VW | Scirocco (53) 1.5 | YJ, ZB | 75 hp | 1974–1975 |
| VW | Scirocco (53B) 1.8 16V / 1.6 / 1.8 / 1.7 | DX, EN, EV, EW, EX, JH, KR, PB, PL, RE | 72–139 hp | 1980–1992 |
| VW | Sharan (7M8, 7M9, 7M6) 2.0 / 2.0 LPG / 2.0 16V / 1.8 T 20V | ABF, ADY, AJH, ATM | 115–150 hp | 1995–2010 |
| VW | Vento (1H2) 1.8 / 1.6 / 2.0 GL / 2.0 | 2E, AAC, AAM, ABS, ACC, ADD, ADY, ADZ, AEE, AEK, AEP, AFT, AGG, AKR, AKS | 75–115 hp | 1991–1998 |
