KAWASAKI 1M1-13101-01-00 Oil Pump Drive Gear

( Manufacturer Part Number: 1M1-13101-01-00 ), ( Type: Oil Pump Drive Gear )

Review KAWASAKI Oem Oil Pump Drive Gear fits KX250 1977

The **Kawasaki 1M1-13101-01-00 oil pump drive gear** from the legendary 1977 KX250 is a meticulously crafted, high-performance component designed to ensure optimal lubrication and longevity for one of motocross s most iconic off-road engines. This precision-machined gear is a direct-fit replacement for the stock unit, engineered to maintain the original power delivery and reliability of the KX250 s legendary 248cc two-stroke heart. Crafted from durable, heat-treated steel, the gear is built to withstand the intense stresses of high-revving, high-torque operation, delivering consistent oil flow even under the most demanding racing conditions. The 1977 KX250 was renowned for its aggressive performance and lightweight construction, and this gear plays a critical role in preserving the engine s efficiency by ensuring proper oil circulation to critical components like the crankshaft, connecting rods, and cylinder walls. Whether restoring a classic KX250 for vintage racing, track days, or museum display, this genuine Kawasaki part guarantees authenticity and performance, allowing enthusiasts to maintain the original factory specifications with confidence. Its compatibility with aftermarket oil pump kits and other performance upgrades further enhances its versatility, making it an essential component for those seeking to revive or optimize the legendary "Kawasaki Killer" for modern use.

### Pros and Cons of Buying a 1977 Kawasaki KX250 Oil Pump Drive Gear (Part Number: 1M1-13101-01-00)

1. **Authentic Replacement Part** This is an original or high-quality reproduction of Kawasaki s factory-specified oil pump drive gear for the 1977 KX250. Using an OEM or aftermarket part that matches the original ensures proper fitment and compatibility with the engine s internal components.

2. **Reliability and Durability** Kawasaki s early dirt bike parts, including the oil pump drive gear, were designed to withstand the stresses of off-road use. A well-maintained or restored part can provide years of trouble-free service, especially if sourced from a reputable supplier.

3. **Prevents Engine Damage** The oil pump drive gear is critical for lubricating the engine. A failing or incorrect gear can lead to dry cranking, excessive wear, or catastrophic engine failure. Replacing it proactively avoids costly repairs down the line.

4. **Easy to Install** This part is relatively straightforward to replace, requiring basic tools and mechanical knowledge. Most riders with moderate DIY experience can handle the job, though some may prefer professional installation if unfamiliar with engine disassembly.

5. **Cost-Effective for Long-Term Use** While the part itself may not be extremely expensive, replacing it early can save money compared to repairing or replacing an entire engine due to neglect.

6. **Availability of Replacement Parts** Kawasaki s classic dirt bikes still have a dedicated aftermarket, meaning this part is relatively easy to find, whether from OEM sources, reputable aftermarket suppliers, or online marketplaces.

7. **Compatibility with Modifications** If you plan to modify your KX250 (e.g., upgrading the engine or transmission), having the correct oil pump drive gear ensures compatibility with aftermarket components.

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1. **Age and Wear** The part is over 40 years old, meaning it may have been stored improperly or exposed to environmental damage (e.g., rust, corrosion, or degradation of materials). If purchasing used, there s a risk of receiving a worn-out or damaged component.

2. **Potential Counterfeit or Low-Quality Replicas** Some aftermarket parts, especially those sold on eBay or other third-party platforms, may be counterfeit or poorly made. These can fail prematurely or cause engine issues if they don t meet OEM specifications.

3. **Limited Warranty or No Return Policy** Many sellers of vintage parts offer no warranty or return policy. If the part fails shortly after installation, you may be out of luck unless you purchase from a dealer with a guarantee.

4. **Difficulty in Sourcing Original Kawasaki Parts** While possible, finding an *authentic* 1977 Kawasaki oil pump drive gear in pristine condition can be challenging. You may need to search through classic bike parts specialists, auctions, or international suppliers.

5. **Installation Complexity for Beginners** Removing and replacing the oil pump drive gear requires disassembling the engine s lower end, which can be tricky for inexperienced riders. Mistakes during installation (e.g., improper torque, misalignment) could lead to further damage.

6. **Cost of Associated Labor** If you re not comfortable working on the bike yourself, labor costs for professional installation can add up, especially if the mechanic charges by the hour for engine work.

7. **Potential for Compatibility Issues** While this part is specific to the 1977 KX250, slight variations in later or earlier models (e.g., 1976 or 1978) might exist. Double-checking the part number and year is essential to avoid mismatches.

8. **Environmental and Ethical Concerns** If purchasing a used part, there s the ethical consideration of whether the original owner removed it due to wear or damage (which could imply the rest of the engine is also worn).

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Buying a 1977 Kawasaki KX250 oil pump drive gear (1M1-13101-01-00) is a practical and often necessary step for maintaining or restoring your bike s engine health. The part is critical for lubrication, and neglecting it can lead to severe engine damage. The decision to purchase should weigh the **reliability of the source**, the **condition of the part**, and your **comfort level with installation**.

If you re restoring a classic KX250 and want to ensure longevity, investing in a **high-quality, authentic, or well-sourced replacement** is justified. However, if you re on a tight budget or unsure about the part s condition, consider alternatives like:

- **Reconditioned OEM parts** (cleaned, inspected, and tested).

- **Reputable aftermarket brands** (e.g., KTM, Yoshi, or other trusted suppliers).

- **DIY inspection** if purchasing used (check for wear, corrosion, or damage before buying).

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1. **Source the Part Carefully** Purchase from a **specialized classic bike parts dealer**, a **Kawasaki-approved supplier**, or a **trusted aftermarket brand** (e.g., Yoshi, KTM, or a seller with verified reviews). Avoid unknown sources to prevent counterfeit or damaged parts.

2. **Verify the Part Number** Ensure the gear matches the exact specifications for your 1977 KX250. Some aftermarket parts may use similar but incompatible designs.

3. **Consider Professional Installation** If you re not experienced with engine work, have a **trusted mechanic** install it to avoid misalignment or improper torque, which could cause leaks or damage.

- Visible wear or pitting on the teeth.

- Signs of rust or corrosion.

- Proper fitment with the oil pump shaft.

5. **Pair with Other Maintenance** If replacing this part, consider also checking the **oil pump, seals, and related components** to ensure the entire lubrication system is functioning correctly.

6. **Budget for Potential Additional Costs** Account for **labor fees** if not installing yourself and **backup parts** (e.g., new seals or gaskets) that may be needed during installation.

**Final Verdict:** This is a **worthwhile purchase** for any serious KX250 owner, provided you obtain it from a reliable source and handle installation with care. Prioritize quality over cost to avoid long-term engine issues.

Details:

Frame# 251536engine # model # This OIL PUMP DRIVE GEAR is in very good condition and shows normal signs of wear. BIN# 38P, Please review all pictures to assess the condition of item. 1977 KAWASAKI KX250 OEM OIL PUMP DRIVE GEAR, This GEAR is in very good condition and shows normal signs of wear. Removed From NA.

part #: 1m1131010100 price

• $40.00

specifications cyclevintagee:

• for models: Kx250
• for makes: Kawasaki
• for years: 1977
• mpn: 1m1-13101-01-00
• type: Oil Pump Drive Gear

shipping cyclevintagee:

• type: Fixed
• service: Standard
• transit: 3-8 Days
• class: Standard
• cost: $0.00

seller cyclevintagee:

• rating: 98.6%
• # reviews: 6858
• city: Spokane, Washington

returns cyclevintagee:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

payments cyclevintagee:

• credit card: Diners-club
• other
• wallet: Apple-pay

general cyclevintagee:

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

offer cyclevintagee:

• sold: 0
• started: March 9, 2026
• availability: In Stock
• best offers: True
• options: Ship-to-home
• quantity: 1

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