Wiseco Piston Applications: Acura

All Wiseco Pistons are sold with a ring set. Rings are available to order for rebuilding or refreshening of the engine.

Acura/Honda
Integra 1994-2001 B18C
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K541M81	81.00/3.189	Std.	3.433 / 87.2	5.433 / 138	1.181 / 30	41.5	-12	.028 / 0.75	.017- / 0.43-	8.347 / 212	8.6-8.9	.827 / 21mm	268	1	8100XX
K541M815	81.50/3.209	.020											274		8150XX
K541M82	82.00/3.228	.040											280		8200XX
K542M81	81.00/3.189	Std.	3.433 / 87.2	5.433 / 138	1.175 / 29.85	41.5	-4 FT	.028 / 0.75	.022- / 0.56-	8.347 / 212	9.7-10.2	.827 / 21mm	268	1	8100XX
K542M815	81.50/3.209	.020											276		8150XX
K542M82	82.00/3.228	.040											281		8200XX
K566M81	81.00/3.189	Std.	3.433 / 87.2	5.433 / 138	1.185 / 30.1	41.5	5	.028 / 0.75	.013- / 0.33-	8.347 / 212	11.8-12.25	.827 / 21mm	275	1	8100XX
K566M815	81.50/3.209	.020											280		8150XX
K566M82	82.00/3.228	.040											284		8200XX
K593M81	81.00/3.189	Std.	3.433 / 87.2	5.433 / 138	1.181 / 30	41.5	8.25	.028 / 0.75	.017- / .043-	8.347 / 212	12.5-13.2	.827 / 21mm	270	1	8100XX
K593M815	81.50/3.209	.020											278		8150XX
K593M82	82.00/3.228	.040											281		8200XX
Optional K1 Rod for B18C Series: Part # HH5433ACFB4-A (1.8 Billett H-Beam 5.433 B18C S/4) Housing Bore 1.890" * Bolt 3/8* * Grams 500
Integra 1990-2000 B18A1/B1
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K541M81	81.00/3.189	Std.	3.504 / 89	5.394 / 137	1.181 / 30	45	-12	.028 / 0.75	.020- / 0.50-	8.347 / 212	8.3-8.6	.827 / 21mm	268	1	8100XX
K541M815	81.50/3.209	.020											274		8150XX
K541M82	82.00/3.228	.040											280		8200XX
K542M81	81.00/3.189	Std.	3.504 / 89	5.394 / 137	1.175 / 29.85	45	-4 FT	.028 / 0.75	.026- / 0.66-	8.347 / 212	9.3-9.8	.827 / 21mm	268	1	8100XX
K542M815	81.50/3.209	.020											276		8150XX
K542M82	82.00/3.228	.040											281		8200XX
K566M81	81.00/3.189	Std.	3.504 / 89	5.394 / 137	1.185 / 30.1	45	5	.028 / 0.75	.016- / 0.40-	8.347 / 212	11.1-11.6	.827 / 21mm	275	1	8100XX
K566M815	81.50/3.209	.020											280		8150XX
K566M82	82.00/3.228	.040											284		8200XX
K593M81	81.00/3.189	Std.	3.504 / 89	5.394 / 137	1.181 / 30	45	8.25	.028 / 0.75	.020- / 0.50-	8.347 / 212	11.8-12.4	.827 / 21mm	270	1	8100XX
K593M815	81.50/3.209	.020											278		8150XX
K593M82	82.00/3.228	.040											281		8200XX
Optional K1 Rod for B18A1/B1 Series: Part # HH5394ACFB4-A (Billett H-Beam 5.394 B18A/B S/4) Housing Bore 1.890" * Bolt 3/8* * Grams 501
B18 LS with B16 VTEC Head
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K541M81	81.00/3.189	Std.	3.504 / 89	5.394 / 137	1.181 / 30	42.7	-12	.028 / 0.75	.020- / 0.50-	8.347 / 212	8.8-9.0	.827 / 21mm	268	1	8100XX
K541M815	81.50/3.209	.020											274		8150XX
K541M82	82.00/3.228	.040											280		8200XX
K542M81	81.00/3.189	Std.	3.504 / 89	5.394 / 137	1.175 / 29.85	42.7	-4 FT	.028 / 0.75	.026- / 0.66-	8.347 / 212	9.8-10.2	.827 / 21mm	268	1	8100XX
K542M815	81.50/3.209	.020											276		8150XX
K542M82	82.00/3.228	.040											281		8200XX
K566M81	81.00/3.189	Std.	3.504 / 89	5.394 / 137	1.185 / 30.1	42.7	5	.028 / 0.75	.016- / 0.40-	8.347 / 212	11.8-12.0	.827 / 21mm	275	1	8100XX
K566M815	81.50/3.209	.020											280		8150XX
K566M82	82.00/3.228	.040											284		8200XX
K593M81	81.00/3.189	Std.	3.504 / 89	5.394 / 137	1.181 / 30	42.7	8.25	.028 / 0.75	.020- / 0.50-	8.347 / 212	12.8-13.0	.827 / 21mm	270	1	8100XX
K593M815	81.50/3.209	.020											278		8150XX
K593M82	82.00/3.228	.040											281		8200XX
Integra GSR 1992-1993 B17A1
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K542M81	81.00/3.189	Std.	3.205 / 81.4	5.208 / 132.3	1.175 / 29.85	42.7	-4 FT	.028 / 0.75	.006- / 0.15-	7.992 / 203	9.1-9.4	.827 / 21mm	268	1	8100XX
K542M815	81.50/3.209	.020											276		8150XX
K542M82	82.00/3.228	.040											281		8200XX
K566M81	81.00/3.189	Std.	3.205 / 81.4	5.208 / 132.3	1.185 / 30.1	42.7	5	.028 / 0.75	.003+ / 0.08+	7.992 / 203	10.9-11.25	.827 / 21mm	275	1,2	8100XX
K566M815	81.50/3.209	.020											280		8150XX
K566M82	82.00/3.228	.040											284		8200XX
K593M81	81.00/3.189	Std.	3.205 / 81.4	5.208 / 132.3	1.181 / 30	42.7	8.25	.028 / 0.75	.000 / 0	7.992 / 203	11.8-12	.827 / 21mm	270	1,2	8100XX
K593M815	81.50/3.209	.020											278		8150XX
K593M82	82.00/3.228	.040											281		8200XX
Civic SI 1993-2001 B16A
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K542M81	81.00/3.189	Std.	3.047 / 77.4	5.29 / 134.4	1.175 / 29.85	42.7	-4 FT	.028 / 0.75	.003- / 0.08-	7.992 / 203	8.8-9.0	.827 / 21mm	268	1	8100XX
K542M815	81.50/3.209	.020											276		8150XX
K542M82	82.00/3.228	.040											281		8200XX
K566M81	81.00/3.189	Std.	3.047 / 77.4	5.29 / 134.4	1.185 / 30.1	42.7	5	.028 / 0.75	.006+ / 0.15+	7.992 / 203	10.75	.827 / 21mm	275	1,2	8100XX
K566M815	81.50/3.209	.020											280		8150XX
K566M82	82.00/3.228	.040											284		8200XX
K593M81	81.00/3.189	Std.	3.047 / 77.4	5.29 / 134.4	1.181 / 30	42.7	8.25	.028 / 0.75	.003+ / .076+	7.992 / 203	11.5	.827 / 21mm	270	1,2	8100XX
K593M815	81.50/3.209	.020											278		8150XX
K593M82	82.00/3.228	.040											281		8200XX
CRV/VTEC 1997-2002 B20B with VTEC Head
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K545M84	84.00/3.307	Std.	3.504 / 89	5.394 / 137	1.181 / 30	42.7	-18	.028 / 0.71	.020- / 0.5-	8.347 / 212	8.4-8.8	.827 / 21mm	271	1	8400XX
K545M845	84.50/3.327	.020											277		8450XX
K545M85	85.00/3.346	.040											284		8500XX
K649M84	84.00/3.307	Std.	3.504 / 89	5.394 / 137	1.181 / 30	42.7	-10	0.028 / 0.71	.020- / 0.5-	8.347 / 212	9.3-9.6	.827 / 21mm		1,3	8400XX
K649M845	84.50/3.327	.020													8450XX
K649M85	85.00/3.346	.040													8500XX
K623M84	84.00/3.307	Std.	3.504 / 89	5.394 / 137	1.181 / 30	42.7	-3 FT	.028 / 0.71	.020- / 0.5-	8.347 / 212	10.4-10.9	.827 / 21mm	291	1	8400XX
K623M845	84.50/3.327	.020	3.504 / 89	5.394 / 137	1.181 / 30	42.7	-3 FT	.028 / 0.71	.020- / 0.5-	8.347 / 212	10.4-10.9	.827 / 21mm	296	1	8450XX
K567M84	84.00/3.307	Std.	3.504 / 89	5.394 / 137	1.181 / 30	42.7	2	.028 / 0.71	.020- / 0.5-	8.347 / 212	11.3-12.0	.827 / 21mm	282	1	8400XX
K567M845	84.50/3.327	.020											287		8450XX
K567M85	85.00/3.346	.040											293		8500XX
K594M84	84.00/3.307	Std.	3.504 / 89	5.394 / 137	1.181 / 30	42.7	8.25	.028 / 0.71	.020- / .5-	8.347 / 212	13.2-14.2	.827 / 21mm	275	1	8400XX
K594M845	84.50/3.327	.020											279		8450XX
K594M85	85.00/3.346	.040											286		8500XX
K594M855	85.50/3.366	.060											292		8550XX
K594M86	86.00/3.386	.080											297		8600XX
RSX-S 2002-2006 K20
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K568M86	86.00/3.386	Std.	3.386 / 86	5.472 / 139	1.181 / 30	50.5	-9	.025 / 0.63	.001- / 0.025-	8.347 / 212	9.0	.866 / 22mm	290	1	8600XX
K568M865	86.50/3.405	.020											298		8650XX
K568M87	87.00/3.425	.040											303		8700XX
K568M875	87.50/3.445	.060											307		8750XX
K568M88	88.00/3.464	.080											312		8800XX
K568M89	89.00/3.504	.120											322		8900XX
K631M86	86.00/3.386	Std.	3.386 / 86	5.472 / 139	1.181 / 30	50.5	-3.4 FT	.025 / 0.63	.001- / 0.025-	8.347 / 212	9.8	.866 / 22mm	302	1	8600XX
K631M865	86.50/3.405	.020											316		8650XX
K631M87	87.00/3.425	.040											336		8700XX
K631M875	87.50/3.445	.060											346		8750XX
K634M87	87.00/3.425	.040	3.386 / 86	5.472 / 139	1.181 / 30	50.5	5	.025 / 0.63	.001- / 0.025-	8.347 / 212	11.0	.866 / 22mm	316	1	8700XX
K634M875	87.50/3.445	.060											318		8750XX
K634M89	89.00/3.504	.120											320		8900XX
K634M895	89.50/3.524	.140											335		8950XX
K573M86	86.00/3.386	Std.	3.386 / 86	5.472 / 139	1.181 / 30	50.5	8	.025 / 0.63	.001- / 0.025-	8.347 / 212	11.7	.866 / 22mm	320	1	8600XX
K573M865	86.50/3.405	.020											325		8650XX
K573M87	87.00/3.425	.040											330		8700XX
K573M875	87.50/3.445	.060											336		8750XX
K573M88	88.00/3.464	.080											341		8800XX
K573M89	89.00/3.504	.120											359		8900XX
K650M86	86.00/3.386	Std.	3.386 / 86	5.472 / 139	1.181 / 30			0.025 / 0.63	.001- / 0.025-	8.347 / 212	12.4	.866 / 22mm		1,4	8600XX
K650M865	86.50/3.405	.020													8650XX
K650M87	87.00/3.425	.040													8700XX
K650M875	87.50/3.445	.060													8750XX
K650M88	88.00/3.464	.080													8800XX
K650M89	89.00/3.504	.120													8900XX
K24 with K20 Cylinder Head
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K622M87	87.00/3.425	Std.	3.897 / 99	5.984 / 152	1.181 / 30	50.5	-21	.025 / 0.63	0 / 0	9.114 / 231.5	8.8	.866 / 22mm	313	1	8700XX
K622M875	87.50/3.445	.020											320		8750XX
K622M88	88.00/3.464	.040											326		8800XX
K568M87	87.00/3.425	Std.	3.897 / 99	5.984 / 152	1.181 / 30	50.5	-9	.025 / 0.63	0 / 0	9.114 / 231.5	10.2	.866 / 22mm	303	1	8700XX
K568M875	87.50/3.445	.020											307		8750XX
K568M88	88.00/3.464	.040											312		8800XX
K568M89	89.00/3.504	.060											322		8900XX
K631M87	87.00/3.425	Std.	3.897 / 99	5.984 / 152	1.181 / 30	50.5	-3.4 FT	.025 / 0.63	0 / 0	9.114 / 231.5	11.1	.866 / 22mm	320	1	8700XX
K631M875	87.50/3.445	.020	3.897 / 99	5.984 / 152	1.181 / 30	50.5	-3.4 FT	.025 / 0.63	0 / 0	9.114 / 231.5	11.1	.866 / 22mm	335	1	8750XX
K634M87	87.00/3.425	Std.	3.897 / 99	5.984 / 152	1.181 / 30	50.5	5	0.025 / 0.63	0 / 0	9.114 / 231.5	12.5:1	.866 / 22mm		1	8700XX
K634M875	87.50/3.445	.020													8750XX
K634M89	89.00/3.504	.060													8900XX
K634M895	89.50/3.524	.080													8950XX
K573M87	87.00/3.425	Std.	3.897 / 99	5.984 / 152	1.181 / 30	50.5	8	.025 / 0.63	0 / 0	9.114 / 231.5	13.7	.866 / 22mm	330	1	8700XX
K573M875	87.50/3.445	.020											336		8750XX
K573M88	88.00/3.464	.040											341		8800XX
K573M89	89.00/3.504	.080											359		8900XX
K650M87	87.00/3.425	Std.	3.897 / 99	5.984 / 152	1.181 / 30	50.5	10.5	0.025 / 0.63	0 / 0	9.114 / 231.5	14.2	.866 / 22mm		1,4	8700XX
K650M875	87.50/3.445	.020													8750XX
K650M88	88.00/3.464	.040													8800XX
K650M89	89.00/3.504	.080													8900XX
Prelude 1992-2001 H22 (FRM cylinders MUST run SLEEVED bores)
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K544M87	87.00/3.425	Std.	3.571 / 90.7	5.636 / 143.15	1.219 / 31	53.8	-14	.028 / 0.71	.001- / 0.025-	8.642 / 219.5	8.5	.866 / 22mm	314	1	8700XX
K544M88	88.00/3.464	.040											331		8800XX
K544M89	89.00/3.504	.080											337		8900XX
K572M87	87.00/3.425	Std.	3.571 / 90.7	5.636 / 143.15	1.219 / 31	53.8	7	.028 / 0.71	.001- / 0.025-	8.642 / 219.5	11.5	.866 / 22mm	333	1	8700XX
K572M88	88.00/3.464	.040											346		8800XX
K572M89	89.00/3.504	.080											355		8900XX
Optional K1 Rod for H22 Series: Part # HH5636AEGB-A (Billett H-Beam 5.636 H22 VTEC) Housing Bore 2.008" * Bolt 3/8* * Grams 530
Prelude H23 (To be run with .030" piston to head minimum requires .040" gasket minimum)
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K544M87	87.00/3.425	Std.	3.74 / 95	5.571 / 141.5	1.219 / 31	50	-14	.028 / 0.71	.001- / 0.025-	8.661 / 220	9.3	.866 / 22mm	314	1	8700XX
K544M88	88.00/3.464	.040											331		8800XX
K544M89	89.00/3.504	.080											337		8900XX
K572M87	87.00/3.425	Std.	3.74 / 95	5.571 / 141.5	1.219 / 31	50	7	.028 / 0.71	.001- / 0.025-	8.661 / 220	13.0	.866 / 22mm	333	1	8700XX
K572M88	88.00/3.464	.040											346		8800XX
K572M89	89.00/3.504	.080											355		8900XX
S2000 F20 and F22 (FRM Cylinders must run SLEEVED bores)
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K632M87	87.00/3.425	Std.	3.307 / 84	6.023 / 153	1.141 / 28.98	52.5	-10	.03 / 0.75	.001- / .025-	8.819 / 224	8.5	.9055 / 23mm	302	F20 1,2	8700XX
K632M875	87.50/ 3.445	.020											307		8750XX
K632M89	89.00/3.504	.080											326		8900XX
K632M87	87.00/3.425	Std.	3.573 / 90.75	5.892 / 149.65	1.141 / 28.98	52.5	-10	.03 / 0.75	.001+ / .025+	8.819 / 224	9.0	.9055 / 23mm	302	F22 1,2	8700XX
K632M875	87.50/ 3.445	.020											307		8750XX
K632M89	89.00/3.504	.080											326		8900XX
Civic SOHC 1992+ D16Z6, D16Y7
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K546M755	75.50 / 2.972	.020	3.543 / 90	5.394 / 137	1.174 / 29.81	34.6	-15.4	.028 / 0.71	.007- / 0.18-	8.347 / 212	8.5	.748 / 19mm	232	1	7550XX
Civic SOHC 1996-2000 D16Y8
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K543M75	75.00 / 2.953	Std.	3.543 / 90	5.394 / 137	1.148 / 29.15	32.8	-14	.028 / 0.71	.033- / 0.84-	8.347 / 212	8.5-9.0	.748 / 19mm	222	1	7500XX
K543M755	75.50 / 2.972	.020	3.543 / 90	5.394 / 137	1.148 / 29.15	32.8	-14	.028 / 0.71	.033- / 0.84-	8.347 / 212	8.5-9.0	.748 / 19mm	230	1	7550XX
Civic 2000-2005 D17
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K624M75	75.00 / 2.953	Std.	3.716 / 94.4	5.394 / 137	1.063 / 27	33.5	-14	.028 / 0.71	.032- / 0.81-	8.347 / 212	8.8	.748 / 19mm	210	1	7500XX
K624M755	75.50 / 2.972	.020	3.716 / 94.4	5.394 / 137	1.063 / 27	33.5	-14	.028 / 0.71	.032- / 0.81-	8.347 / 212	8.8	.748 / 19mm	217	1	7550XX
Optional K1 Rod for D17 Series: Part # HH5394ACAB4-A (Billet H-Beam 5.394 D17) Housing Bore 1.890" * Bolt 3/8" * Grams 463
Fit L15A 1.5L
Kit Part #	Bore mm/Inch	Over Sizes	Stroke	Rod Lgth.	Comp Ht.	Head cc's	Dome Dish	Gasket Thkness	Deck Clearance	Block Ht.	Comp. Ratio	Pin Dia.	Gram	Foot Notes	Ring #
K637M73	73.00 / 2.874	Std.	3.520 / 89.4	5.866 / 149	1.030 / 26.16		-11.5				9.8	.709 / 18mm	203		2874XC

1. Most Wiseco pistons have offset pins. Pins must be offset same as o.e. for quitest operation - pin offset will be opposite of direction of engine rotation.

2. This piston is a flat top w/out valve pockets, to be used if verifying piston to valve and piston to head clearance.

6. Subaru piston for stroker application. Oil ring can drop into pin installation access hole, sleeved block w/ out access hole needed for best results.

Some pistons are listed with a range of compression ratio's. The low number is determined with an un-cut deck and the higher number is determined with .030 piston to cylinder head clearance.
Always check piston to valve clearance - If using VTEC or like mechanisms-check with longer duration higher lift lobe.
Always run at least .030 piston to head clearance including gasket thickness.
If piston appears to be different than expected, please do not hesitate to call Wiseco at 800-321-1364 to verify compatibility

Wiseco Pistons Descriptions Applications