Cometic Gasket · New
Cometic Honda A20A1/3,B16A2/3,B17A1,B18A1,B18C1/5,B20A3/5,B20B4,B20Z2,B21A1,D15A1 Rear Main Seal
MPN C4678 · Store SKU cgsC4678
Supplier stock checked 11/7/2026, 9:17:37 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Cometic is dedicated to customer satisfaction and provides quality products, delivered on time at a competitive price, designed for each customer's specific application. Cometic is an industry leader in manufacturing processes and committed to pairing the highest possible quality materials with knowledgeable personnel. Cometic is also dedicated to continually improving all areas of its operations through employee development and involvement, as well as continual and comprehensive reviews of customer feedback. Honda A20A1/3;B16A2/3;B17A1;B18A1;B18C1/5;B20A3/5;B20B4;B20Z2;B21A1;D15A1/2/3/4;D15B1/2/6/7/8;D15Z1;D16A1/6;D16B5;D16Y5/7/8;D16Z6;ES1;ET;EV1;EW1/2/3/4;F22A1/4;F22B1/2/6;F23A1/4/5/7;G25A1/4;H22A1/4;H23A1 Rear Main Seal Honda A20A1/3,B16A2/3,B17A1,B18A1,B18C1/5,B20A3/5,B20B4,B20Z2,B21A1,D15A1/2/3/4,D15B1/2/6/7/8,D15Z1,D16A1/6,D16B5,D16Y5/7/8,D16Z6,ES1,ET,EV1,EW1/2/3/4,F22A1/4,F22B1/2/6,F23A1/4/5/7,G25A1/4,H22A1/4,H23A1 Rear Main Seal Cometic utlizes their in-house dynamometersand engine assembly rooms to ensure quality and reliability Honda B16A2/B16A3/B18C1/B18C5 Rear Main Seal
Manufacturer fitment & guides
Check C4678 against the manufacturer’s application information below.
Part-specific notes
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