| OEM | FITS FOR | DETAILS |
| 4721870980 A4721870980 | Deutz-Fahr Series 11 2014- Freightliner ARGOSY 1998- CASCADIA 2010- CENTURY 1995- COLUMBIA 2000- CORONADO 2002- Fuso Mitsubishi Shogun 2019- Super Great V 2017- Mercedes BENZ ACTROS MP4 / MP5 2011- ANTOS 2012-2018 AROCS 2013- CAPACITY 2007- CITARO 2 2011- TOURISMO II 2017- TRAVEGO II 2016- Setra Series 400 2001- Series 500 2012- WESTERN STAR 4800 1985- 4900 2004- 5800 2004- |
Thickness：6.2 mm ID：38.3 mm OD：48 mm |
This is a molded NBR/ACM O-ring for the Detroit DD15 engine, formed to a round cross-section and sized for the machined groove at the engine joint, where it compresses under load and holds oil at a point where a flat gasket alone will not seal. Rebuild shops, fleet workshops and parts distributors keep it in their automotive engine parts range as a service item, because one reference covers a wide spread of heavy-truck platforms and a small part often decides whether a repair comes back a second time. Fit a fresh ring whenever the joint is opened, whether that is a top-end overhaul, injector work or a job picked up during a scheduled service.
| Specification | Detail |
|---|---|
| Product | Detroit DD15 engine O-ring |
| Material | NBR/ACM (nitrile and polyacrylate rubber) |
| Item number | TKBZ-016 |
| OEM reference | 4721870980, also listed as A4721870980 |
| Cross-section | Round profile, 6.2 mm thick |
| Inner diameter | 38.3 mm |
| Outer diameter | 48 mm |
| Seal type | Static seal, compressed in the groove |
| Service duty | Engine oil and hot air at the joint |
| Unit of supply | One ring |
LUKE AUTOPARTS is a manufacturer and supplier of automotive aftermarket parts, covering engine sealing, suspension, engine mount and air intake components for commercial and passenger vehicles. Our portfolio serves Volvo, MAN, Chevrolet, Daewoo/Holden, Detroit Diesel, Freightliner, Mercedes-Benz, Renault Trucks and Western Star platforms. We offer OEM and ODM services, including custom logo printing, private label packaging, product development and customized rubber formulations. Standard MOQ is 100 pieces per item, with custom packaging quantities confirmed on request.
It is produced in our own plant to the original reference and dimensions rather than supplied in a dealer box, which is what makes it practical for rebuild shops and fleets that replace this seal as a service item. As an auto parts manufacturer we keep the reference on the part and in our production records, so it stays traceable through your own paperwork.
Clean the groove and remove any old sealant, then check the seat for scoring or corrosion. Lightly oil the ring with clean engine oil that suits the compound, seat it by hand without stretching or twisting it, and keep sharp picks away from the surface. When the joint closes, the ring should compress evenly with no part of it pinched outside the groove.
An O-ring that has been through heat cycles takes a compression set, meaning it flattens into the groove and loses the elasticity that makes the seal work. That change is usually invisible on the bench, which is why a refitted ring often starts weeping again a few weeks after the repair. Fit a new one whenever the joint is opened.
Keep them in the original bag in a cool, dry place out of direct sunlight and away from electric motors and other ozone sources, which attack rubber over time. Do not hang the rings on hooks or stretch them over a rod, and rotate your stock so the oldest batch is used first. Stored this way, spare seals keep their shape until they are needed.
This O-ring is supplied in one reference and one size, and the dimensions are confirmed before the ring is molded. If your engine takes a different seal, send the number from the old part or the dimensions you measured and we will match it from our range. As an automotive components manufacturer we also produce custom rubber formulations when a standard compound does not suit the service conditions.
It is supplied on its own as the replacement seal for the joint. If you are resealing the joint and want the other sealing parts for the same job, send us the engine model and the reference you are working from, and we will tell you which other seals in our range belong to that repair.
Q: What material is used for the stabilizer bar bushing?
A: Our stabilizer bar bushings are manufactured from premium rubber compounds, providing excellent wear resistance, vibration absorption, and long service life under various driving conditions.
Q: Do you export Toyota suspension parts worldwide?
A: Yes. We export Toyota suspension and rubber parts to customers in the Middle East, Africa, South America, Southeast Asia, and other international markets. We support sea, air, and express shipments according to customer requirements.
