YAMAHA 438-21705-01-N7 Oil Tank

( Manufacturer Part Number: 438-21705-01-N7 ), ( Part Type: Oil Tank ), ( Machine Type: Dual Sport Motorcycle ), ( Vintage Part: Yes )

Review YAMAHA Oil Tank fits DT250 1974

The **Yamaha DT250 Oil Tank (Part Number: 438-21705-01-N7, circa 1974)** is a meticulously crafted, vintage component designed to ensure reliable lubrication for Yamaha s legendary DT250 dual-sport motorcycle, a machine celebrated for its rugged versatility and timeless engineering. This oil tank, crafted from durable, high-quality metal, embodies the robust yet functional aesthetic of Yamaha s mid-70s motorcycle design, blending practicality with a classic, understated appeal. The tank features a streamlined, slightly tapered shape that not only enhances the motorcycle s ergonomic balance but also optimizes fuel and oil storage efficiency, allowing riders to maintain optimal performance over extended distances. The exterior is finished with a matte, dark enamel coating, providing both a protective barrier against corrosion and a subtle, understated visual presence that complements the motorcycle s overall vintage charm. Inside, the tank is lined with a reinforced rubber gasket, ensuring a secure seal that prevents leaks and maintains oil integrity, even under the demanding conditions of off-road riding or long-distance travel.

Functionally, this oil tank is engineered to accommodate the DT250 s specific lubrication needs, with precise measurements tailored to the engine s requirements. The tank s capacity is designed to support the motorcycle s dual-purpose nature, whether navigating rough terrain or cruising on paved roads, by providing a consistent and adequate supply of oil to keep the engine running smoothly and efficiently. The mounting points are strategically positioned to integrate seamlessly with the motorcycle s frame, ensuring stability and ease of installation without compromising the bike s handling dynamics. For collectors, restorers, or enthusiasts seeking to preserve the authenticity of their Yamaha DT250, this oil tank serves as an essential, period-correct replacement part, allowing owners to maintain the motorcycle s original performance and aesthetic integrity. Whether used in a fully restored classic or as part of a meticulous rebuild, this tank exemplifies Yamaha s commitment to durability and precision engineering, making it a sought-after component for those who appreciate the marriage of form and function in vintage motorcycle design.

### **Pros and Cons of buying a Yamaha DT250 (1974 Model, Part Number: 438-21705-01-N7) Oil Tank**

1. **Authentic Vintage Replacement Part** The oil tank is an original or genuine OEM replacement, ensuring compatibility with the 1974 Yamaha DT250. This reduces the risk of fitment issues that can arise with aftermarket parts.

2. **Reliability and Durability** Yamaha s components, even from the 1970s, were built to last. The oil tank, if in good condition, will function reliably for years, especially if properly maintained.

3. **Ease of Installation** As an original part, it should fit seamlessly without requiring extensive modifications. This makes it a straightforward upgrade or replacement compared to aftermarket alternatives that may require additional hoses, clamps, or adjustments.

4. **Aesthetic Consistency** If you value the motorcycle s original appearance, using an authentic oil tank helps maintain the bike s vintage look without the need for custom modifications.

5. **Potential for Restoration** If you re restoring a classic Yamaha DT250, sourcing original parts like this oil tank ensures authenticity, which can be valuable for collectors or enthusiasts who prioritize historical accuracy.

6. **Lower Risk of Leaks** Original parts are often designed with proper tolerances, reducing the likelihood of leaks that can occur with aftermarket parts that may not fit as precisely.

7. **Resale Value** If you plan to sell the bike later, having original or high-quality replacement parts can appeal to buyers who appreciate well-preserved vintage motorcycles.

---

1. **Age and Wear** The oil tank, being from 1974, may show signs of wear, such as cracks, rust, or degradation of the rubber seals. If the part has been stored improperly, it could be damaged even if it appears intact.

2. **Limited Availability** Original Yamaha parts from the 1970s are increasingly rare. Finding a genuine, high-quality replacement may require searching through vintage motorcycle parts dealers, eBay, or specialized collectors, which can be time-consuming and costly.

3. **Potential for Counterfeit Parts** Due to scarcity, there is a risk of encountering counterfeit or poorly replicated parts labeled as "original." These may not fit correctly or could fail prematurely. Always verify the seller s reputation and authenticity.

4. **Cost Compared to Aftermarket Alternatives** Original Yamaha parts can be significantly more expensive than aftermarket options. While aftermarket tanks may not be identical, they are often more affordable and widely available.

5. **Maintenance Requirements** Even if the tank is in good condition, vintage parts may require more frequent inspection for leaks or corrosion, especially if the bike is ridden frequently or exposed to harsh conditions.

6. **Transportation and Handling Risks** Shipping or transporting a vintage part can be risky. The tank may be fragile, and improper handling could lead to damage during transit.

7. **Compatibility Uncertainties** While the part is designed for the DT250, slight variations in later models or modifications to the bike could cause fitment issues. Always inspect the part closely before purchasing.

---

Buying the **Yamaha DT250 oil tank (438-21705-01-N7) from 1974** is a strong choice if you prioritize **authenticity, reliability, and ease of installation** for your vintage motorcycle. The original part ensures a seamless fit and maintains the bike s historical integrity, which is invaluable for collectors or restorers. However, the **limited availability, potential for wear or counterfeit parts, and higher cost** compared to aftermarket alternatives must be carefully considered.

If you are restoring a classic DT250 and want to preserve its original character, this part is worth the investment. If, on the other hand, you are looking for a more budget-friendly or widely available solution, an aftermarket oil tank may be a practical alternative, provided it meets your fitment and quality standards.

---

- You have verified the part s authenticity and condition (e.g., no cracks, rust, or damage).

- You are restoring or maintaining a vintage DT250 and value original components.

- You are willing to pay a premium for reliability and ease of installation.

- You are on a tighter budget and can find a high-quality aftermarket tank that fits well.

- You prioritize availability and lower cost over absolute authenticity.

- You plan to inspect the part thoroughly (or have it professionally inspected) before installation.

- Purchase from a reputable seller, such as a specialized vintage motorcycle parts dealer or a trusted eBay vendor with positive reviews.

- Inspect the part for any signs of damage, corrosion, or wear before finalizing the purchase.

- If possible, test the tank for leaks by filling it with oil and checking for drips or weak seals.

- Keep a backup plan in case the part arrives damaged or fails to fit correctly.

Details:

This oil tank is compatible with the Yamaha DT250 model from 1974, may fit other model's. Does not leak small dent no cap The 1974 Yamaha DT250 oil tank is a vintage part designed specifically for dual sport motorcycles.

part #: 4382170501n7 prices

• $29.75-$70.00

specifications cyclevintagee:

• for models: Dt250
• for makes: Yamaha
• for years: 1974
• mpn: 438-21705-01-n7
• part type: Oil Tank
• machine type: Dual Sport Motorcycle
• vintage part: Yes

seller cyclevintagee:

• # reviews: 483
• rating: 100.0%
• city: Dudley, Pennsylvania

payments cyclevintagee:

• wallet: Apple-pay
• credit card: Mastercard
• other

returns cyclevintagee:

• policy: No Returns

general cyclevintagee:

• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
• condition: Used

offer cyclevintagee:

• started: April 17, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• best offers: True
• sold: 0

shipping cyclevintagee:

• cost: $8.81
• carrier: USPS
• service: USPS Ground Advantage
• transit: 5-11 Days
• class: Standard
• type: Calculated

Yamaha 438-21705-01-N7 Is Similar To:

• 13-008 Shindy Nos Yamaha Fork Oil Seal Suzuki Set Of (29.8% similar) Nos shiny yamaha fork oil seal RD400 TS650 DT250 Suzuki TS400 set of...(October 25th, 2018)
• 132-15416-00 Yamaha Genuine Oil Pump Cover (31% similar) Part 00PART cover,oil pump model count 4AS2C AS2C street scrambler YAS1C 125 twin scrambler YL1 jet 100 YL1E Electra sierra...(May 24th, 2018)
• 168-15363-00 Yamaha Oil Plug Used (29.3% similar) I communicate about my merchandise. Yamaha oil plug, used, YR1TR2 1970 TR2B 1971 R3 1969 YR2 1968 TR2C 1968 removed from a 1967 YR1 good condition please examine all the photos...(February 3rd, 2018)
• 174-15416-00-00 Nos Yamaha Oem Oil Pump Cover Ycs (26.4% similar) Yamaha oem oil pump cover CS3 Cs nos item is new old stock...(August 14th, 2018)
• 1976-1981 Vtg Yamaha Xs360 Xs400 Oil (41% similar) VG yamaha XS360 XS400 oil filter cover...(December 25th, 2016)
• 1m1-24110-00-06 Yamaha Gas Fuel Tank Comp Yellow Nice (29.5% similar) A few dings scratches as pictured no significant dents. Very little rust in tank as pictured. Yamaha DT400 gas fuel tank 1M1 comp yellow nice great used shape off a running 1978...(August 8th, 2018)
• 1tp-y2410-00-01 Yamaha Oem Petrol Gas Cell Fuel Tank Black Metallic (25.7% similar) Yamaha oem petrol gas cell fuel tank 1TP-Y2410 black metallic...(May 17th, 2018)
• 214-21761-00 Yamaha Oil Level Window Dt Rs (28.6% similar) This is a brand new nos yamaha oil level window gauge. Guaranteed lowest prices on. 66 in the us. Find a lower total price, product and shipping combined, I will beat it...(July 9th, 2018)
• 248-21705-01-02 Yamaha Oil Tank Excellent Condition (47.3% similar) The inside is perfectly clean with no rust. There are a few very tiny scratches. This candy orange oil tank is correct for 1971 CT1 175CC endure. You can see in the photo that there are no dents or cracks. If you're trying to do a 100 point restoration, the paint is not good enough for that. Also...(November 11th, 2018)
• 256-13414-10 Yamaha Oil Pump Cover Gasket (31.3% similar) Yamaha TX650 XS1 XS2 XS650 oil pump Strine cover gasket 10FREE shipping...(September 24th, 2018)
• 276-24110-00-04 Yamaha Enduro Gas Petrol Tank (39.1% similar) Petcock unsure of condition sold as is. Tank has coating to prevent rust on the inside seems have been installed at factory or early in bikes life. Small dent rust on side see picture 04. Included: orig...(August 6th, 2018)