ATHENA
Athena Metal-Base Valve Stem Seal Pair
- Manufacturer part #
- M73904SV00000
- Supplier reference
- 3396
- APJ SKU
- APJ000014
In stock · Ready to ship
Prepared within 1 business day · Tracking included.
Shipping & 30-day returns
Standard: $8, or free on orders of $70 or more. Estimated transit: 3–5 business days after shipment.
Express: $15. Estimated transit: 1–2 business days after shipment. Preparation time is additional; available options appear at checkout.
Returns: Request within 30 days of delivery. Items must be unused and in their original packaging. Contact APJ before returning anything. Return shipping is the customer's responsibility unless APJ confirms an incorrect or defective item.
Product details & included items.
2 metal-base valve stem seals · 4.5 × 8.2 × 8 mm · ATHENA M73904SV00000
Valve stem seal pair for cylinder-head maintenance. The metal outer shell supports the molded sealing element at the valve guide. Correctly matched seals help control oil passage along the valve stems. Supplied as two seals; compare the original seal dimensions and mounting profile before fitting.
- 2 metal-base valve stem seals (1 pair).
Guide number 1 identifies the supplied seal type. Valve guides, valves, springs and other cylinder-head parts are not included.
Technical specifications
| Quantity supplied | 2 valve stem seals (1 pair) |
|---|---|
| Motorcycle | Yamaha — see OEM reference applications |
| Model years | See model-specific reference table |
| Package format | Valve stem seal pair |
| Product type | Valve Stem Seals |
| Component dimensions (ID × OD × H) | 4.5 × 8.2 × 8 mm (APJ-confirmed) |
| Construction | Metal outer shell with molded green sealing element |
| Yamaha OEM reference for comparison | 4SV-12119-00-00 (4SV-12119-00) |
| Assembly | Cylinder head / valve guides |
| Valve position | Check intake / exhaust position for the exact engine |
Packaged product — weight & dimensions
| Packaged product weight | 0.15 oz (4.3 g) |
|---|---|
| Packaged dimensions (L × W × H) | 5 × 2.5 × 0.5 in (12.70 × 6.35 × 1.27 cm) |
Measurements refer to the packaged product, not the individual component dimensions.
Installation & preparation
Follow the motorcycle service manual. Inspect the valve stems and guides for wear and compare the new seal with the removed part. Protect the sealing lip when passing keeper grooves, lubricate as specified and press squarely using a suitable driver that supports the intended seating area. Do not distort the metal shell. Check seating and complete the valve-train inspection before starting the engine.
Reference note: the Vedamotors catalog identifies M73904SV00000 with Yamaha T105/115 applications outside this U.S. reference table. A direct manufacturer-confirmed interchange to Yamaha 4SV-12119-00-00 remains to be established. Similar part-code digits or appearance alone do not establish equivalence.
Material & construction
Metal-base construction with a green molded sealing element, as shown in the product photo. The exact elastomer compound, metal alloy and operating temperature have not been established from product-specific manufacturer documentation. Green color alone does not establish FKM, NBR, silicone or heat resistance. TEADIT gasket-sheet specifications do not apply to this valve stem seal.