Genuine Mopar 898878 Compression Oil Ring Package (NOS)
This is a genuine Mopar New Old Stock (NOS) engine piston ring package, precision-manufactured in the USA for vintage L-head 6-cylinder engines. This comprehensive set is designed for a 3-3/8" standard bore and includes six top compression rings, six second compression rings, six upper oil control rings, and six oil master piston rings. Specifically engineered for 1934-1941 Chrysler, DeSoto, Dodge, and Plymouth models, these rings are suitable for cylinder sizes ranging from Standard (STD) to .009 Oversize (O/S). As an original factory component, this ring package ensures the correct tension, heat dissipation, and oil control necessary to restore factory-spec compression and performance to your classic Mopar power plant.
Key Features:
- Brand: Mopar
- Part Number: 898878
- Interchange: 898926
- Position: Engine Pistons
- Engine Fitment: 201.3 / 217.8 CID L-Head 6-Cylinder
- Origin: Made in USA
- Condition: NOS (New Old Stock)
Verified Vehicle Fitment:
| Make |
Model |
Year |
Engine |
Notes |
| Chrysler |
Royal / Windsor / Imperial / Airflow |
1934-1941 |
L6 |
3-3/8" Bore; STD to .009 O/S |
| DeSoto |
S-Series / Custom / Deluxe / Airflow |
1934-1941 |
L6 |
3-3/8" Bore; STD to .009 O/S |
| Dodge |
Series D / Deluxe / Luxury Liner |
1934-1941 |
L6 |
3-3/8" Bore; STD to .009 O/S |
| Plymouth |
Model P / Roadking / Deluxe |
1934-1941 |
L6 |
3-3/8" Bore; STD to .009 O/S |
Fits Years:
1934 1935 1936 1937 1938 1939 1940 1941
Actual Item Photos: Please look over the pictures carefully, as they depict the exact item you will receive. We utilize high-resolution photos of our current physical inventory rather than generic stock images so you can verify the specific condition, markings, and authenticity of this vintage part prior to purchase.
A Note on Fitment Accuracy: We manually research and cross-reference our fitment data using vintage manufacturer catalogs. While we strive for 100% accuracy, these decades-old resources—and the humans reading them—can occasionally contain errors. Additionally, these parts may fit other vehicles and years not explicitly listed in our data. To ensure a seamless restoration, we kindly ask that you perform your own due diligence and verify that this specific part number is correct for your application prior to purchase.
Unbeatable Prices & Expectations
This is a high-quality vintage component. As with many New Old Stock (NOS) parts, the item and its packaging may exhibit minor "shelf wear" consistent with several decades of storage. This can include light surface oxidation, dust, or minor box deterioration, none of which affect the structural integrity or performance of the part. These components represent the original manufacturing quality of a bygone era, often far exceeding the standards of modern aftermarket replacements.
