MOTORAD SX-JN42 Fuel Tank Cap Nq 3.8L 4.3L

( Brand: Motorad ), ( Manufacturer Part Number: SX-JN42 ), ( Type: Fuel Tank Cap ), ( Placement On Vehicle: Air Fuel Delivery Hardware Fasteners Fittings ), ( Item Width: 3.000 ), ( Item Length: 3.250 ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C821 54-65 ), ( Compatible Model: Cutlass Cruiser ), ( Compatible Year: 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Motorad Fuel Tank Cap )

Review MOTORAD Fuel Tank Cap Oldsmobile 3.8l 4.3l Nq fits CUTLASS CRUISER 1980–1994

The **Motorad SX-JN42 Fuel Tank Cap** is a meticulously crafted, high-performance replacement part designed specifically for the iconic **1980 1994 Oldsmobile Cutlass Cruiser** with the **3.8L (V6) or 4.3L (V8) NQ engine platform**. Engineered to meet the exacting standards of vintage automotive enthusiasts, this fuel tank cap is not only a functional upgrade but also a stylish nod to the classic aesthetic of the Cruiser s era. Constructed from durable, corrosion-resistant materials, the SX-JN42 features a sleek, matte black finish that blends seamlessly with the vehicle s original trim while ensuring long-lasting durability in all weather conditions. Unlike generic aftermarket alternatives, this cap is precision-molded to match the original dimensions and fitment, eliminating any risk of misalignment or improper sealing critical for maintaining fuel system integrity and preventing leaks. The cap s secure locking mechanism ensures a tight seal, reducing fuel vapors and enhancing overall engine performance by minimizing air intake during operation. For collectors and restorers alike, the SX-JN42 is an essential component for achieving an authentic, show-ready finish, while its robust construction also makes it ideal for daily drivers seeking reliability without compromising on heritage appeal. Whether restoring a museum-quality Cruiser or simply upgrading a beloved classic, this fuel tank cap delivers both form and function with the precision and quality expected from Motorad s reputation for excellence in aftermarket automotive parts.

### Pros and Cons of Buying a Motorad SX-JN42 Fuel Tank Cap for a 1980 1994 Oldsmobile Cutlass Cruiser (3.8L/4.3L NQ)

1. **Compatibility** The Motorad SX-JN42 is specifically designed to fit the fuel tank cap on the N-body (NQ) Oldsmobile Cutlass Cruiser, including both the 3.8L V6 and 4.3L V8 engines from 1980 to 1994. This ensures a proper fit without modifications.

2. **Improved Fuel Cap Functionality** Motorad s fuel tank caps are often engineered to reduce fuel evaporation, prevent spills, and improve sealing compared to stock OEM caps. This can help maintain fuel efficiency and reduce vapor leaks.

3. **Durability** Motorad products are generally made with high-quality materials, including sturdy plastic and reliable locking mechanisms, which can last longer than the original cap, especially if the OEM part has degraded over time.

4. **Ease of Installation** Since it s a direct replacement, installing the Motorad cap is straightforward no additional tools or modifications are required beyond removing the old cap.

5. **Aesthetic Appeal** If you prefer a cleaner or more modern look, Motorad caps often have a sleeker design than the stock OEM part, which may have a more utilitarian appearance.

6. **Prevents Theft** Many Motorad fuel caps feature anti-theft mechanisms, such as tamper-resistant locks or unique keyed designs, making it harder for thieves to quickly remove the cap and access the fuel system.

7. **Compatibility with Aftermarket Fuel Systems** If you ve modified your vehicle with an aftermarket fuel system (e.g., fuel line upgrades, fuel pumps, or injectors), a high-quality cap like the SX-JN42 ensures proper sealing to avoid leaks or pressure issues.

---

1. **Cost** While not excessively expensive, a Motorad fuel cap will likely be more costly than a generic OEM replacement part. If you re on a tight budget, you might consider a cheaper aftermarket alternative, though quality may vary.

2. **Potential Overkill for Minor Use** If your vehicle is rarely driven or stored in a secure location, the added security features of the Motorad cap may not be necessary. For most owners, the primary concern is functionality rather than theft prevention.

3. **Availability of OEM Replacements** If you prefer to stick with OEM parts for consistency, you may find that a genuine Oldsmobile fuel cap is still available through parts dealers, though it may be harder to source than a Motorad version.

4. **Mixed Reviews on Longevity** While Motorad is a reputable brand, some users report that their fuel caps (or related products) have failed prematurely due to material weaknesses or poor sealing over time. Always check recent reviews before purchasing.

5. **Potential for Misalignment** If the fuel tank or surrounding area has been modified (e.g., rust repairs, fuel line rerouting), there s a slight risk that the Motorad cap may not align perfectly with the tank opening, requiring adjustments.

6. **No Significant Performance Gain** Unlike performance-oriented modifications (e.g., intake upgrades, exhaust systems), a fuel cap replacement does not meaningfully improve engine performance. It s primarily a maintenance or convenience upgrade.

---

### **Conclusion and Recommendation**

The **Motorad SX-JN42 fuel tank cap** is a solid choice for owners of a 1980 1994 Oldsmobile Cutlass Cruiser (NQ) with either the 3.8L or 4.3L engine. Its **direct compatibility, improved sealing, and durability** make it a practical upgrade over the stock cap, especially if you ve noticed leaks, difficulty in opening/closing, or wear on the original part.

- **Buy it if:** You want a reliable, long-lasting replacement with better sealing and potential anti-theft benefits, and you re willing to pay a modest premium for a quality aftermarket part.

- **Avoid it if:** You re strictly on a budget and can find a comparable OEM or generic replacement at a lower cost, or if you re unsure about the cap s long-term reliability based on reviews.

- **Consider alternatives:** If you re concerned about cost, check for OEM replacements or other reputable brands (e.g., **EcoFuel, FuelCapPro**) that offer similar functionality. Always verify compatibility with your specific year and engine configuration.

**Final Verdict:** For most Cutlass Cruiser owners, the Motorad SX-JN42 is a **worthwhile upgrade** that justifies its cost with improved functionality and peace of mind. Install it as part of routine maintenance to prevent future issues with fuel leaks or cap failure.

Details:

MotoRad Fuel Tank Cap for 1980 - 1994 Oldsmobile Cutlass Cruiser 3.8L 4.3L nq: Status: In Stock.

part #: sxjn42 price

• $13.48

specifications fueltanksysteme:

• for models: Cutlass, Cruiser
• for makes: Oldsmobile
• for years: 1980-1994
• brand: Motorad
• mpn: Sx-jn42
• type: Fuel Tank Cap
• placement on vehicle: Air Fuel Delivery Hardware Fasteners Fittings
• item width: 3.000
• item length: 3.250
• manufacturer warranty: 1 Year
• ipn: C821 54-65
• compatible model: Cutlass Cruiser
• compatible year: 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Motorad Fuel Tank Cap

general fueltanksysteme:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Tanks Filler Necks

returns fueltanksysteme:

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

seller fueltanksysteme:

• rating: 99.7%
• city: Indianapolis, Indiana
• # reviews: 663269

shipping fueltanksysteme:

• cost: $0.00
• service: Standard, Expedited
• transit: 4-8 Days
• class: Standard, Expedited
• type: Fixed

offer fueltanksysteme:

• availability: In Stock
• options: Ship-to-home
• started: June 1, 2026
• sold: 0
• quantity: 10

payments fueltanksysteme:

• credit card: Visa
• other
• wallet: Google-pay

Motorad SX-JN42 Is Similar To:

• 2003-11 Motorad Heavy Duty Fuel Cap Nonlocking Un Thread 055644804125 (30.3% similar) Motorad part number our choice. Once purchased you own it. Or any other minor issue that does not make the part you are buying defective. Sometimes the fitment is so old that it does not take into account trim, engine size or build dates. Shipping:free shipping is for continental USA only. If any ...(November 3rd, 2018)
• 2504-11 Motorad Heavy Duty Fuel Cap With Lock (32.8% similar) Motorad heavy duty fuel cap with lock. This is new in open box...(April 4th, 2018)
• Mgc-793sk Motorad Dual Locking Fuel Cap Tanks Air Intake 055644107936 (36.8% similar) Motorad MGC-793SK dual locking fuel cap protects your from theft and vandalism passes all state federal emissions tests manufactured durable, long-life materials reduces air pollution with proper sealing venting independently tested for emission control deters vandalism. Specifically designed ...(June 16th, 2018)
• Mgc-807 Cst Motorad Mgc807 Fuel 055644008073 (26.8% similar) CST Motorad MGC807 fuel tank cap thumbnails to caps are designed and manufactured prevent loss, primarily through evaporation. Please through the messaging system by ing button above. Combining a inventory and showrooms full of parts provides us the advantage shipping products quickly efficiently. A...(January 23rd, 2018)
• Mgc-811 Cst Motorad Mgc811 Fuel 055644008110 (26.8% similar) Our product offering includes every conceivable trailer, tire, towing device, truck accessory, suspension, exhaust, lighting, and performance part. A faulty or leaky fuel cap emit up-to 30 gallons of per year in to the atmosphere. All of Motorad fuel caps meet federal MVSS301 and I m 240 ...(February 22nd, 2018)
• Mgc 832 Wd Express Motorad Fuel Tank Cap Fits Jaguar Vanden (42.3% similar) ...(October 27th, 2018)
• Mgc-837 Motorad Fuel Tank Cap Upc 055644008370 (41.9% similar) CHRYSLER1999-2017DODGE1999-2017FIAT2012--2017INFINI 002-2011JEEP2000-2017KIA2005-2017MAZDA2003-2015MERCEDES-BENZ2006-2017MITSUBISHI2001-2017NISSAN2000-2013PLYMOUTH1999-2001RAM2011-2017SUBARU2005-2017SUZUKI2009-2011VOLKSWAGEN2009-2014...(January 18th, 2019)
• Mgc46 Motorad Fuel Gas Tank Filler Cap Replace Oem (40.6% similar) Motorad MGC-46STANDARD fuel cap tank verify fitment before purchase...(April 18th, 2018)
• Mgc48 Motorad Pronto Fuel Tank Fits Pickup Suburban (40.3% similar) No other accessories included. See photos above. Fast shipping. Receive only what is pictured listed. Comes as shown...(February 17th, 2019)
• Mgc519 Motorad Push Vent Fuel Tank Cap Fits Volvo 055644115191 (44.1% similar) Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. and we urge you to take a look if cannot find what are looking for at egghead. Orders ship from 12 major metropolitan markets in the us. A ...(June 5th, 2019)
• Mgc637t Motorad Fuel Cap (29.9% similar) ...(January 1st, 2019)