DORMAN 40FF964 Engine Crankcase Breather Hose 1.8L L4

( Brand: Dorman ), ( Manufacturer Part Number: 40FF964 ), ( Part Type: Engine Breather Hose ), ( Manufacturer Warranty: 1 Year ), ( Compatibility Notes: Engine ), ( Notes: Y From Valve Cover ), ( Description: Vacuum Breather ), ( Short Description: Breather Tube ), ( Package Contents: 1 Breather Tube ), ( Material: Eco ), ( Cs-sku: 328 )

Review DORMAN Engine Crankcase Breather Hose Volkswagen 1.8l L4 fits JETTA 2000–2005

The **Dorman 40FF964 Engine Crankcase Breather Hose** is a high-quality, direct-fit replacement part designed specifically for the **2000 2005 Volkswagen Jetta 1.8L L4 engine**, ensuring optimal performance and longevity for your vehicle s critical ventilation system. Engine crankcase breathers play a vital role in maintaining proper pressure within the engine bay, preventing oil leaks, reducing emissions, and protecting internal components from excessive buildup of blow-by gases. This hose is meticulously crafted from durable, heat-resistant materials that resist cracking, hardening, or degrading under the demanding conditions of a high-performance or daily-driven engine. Its precise fitment ensures a secure connection to the **PCV (Positive Crankcase Ventilation) system**, allowing gases to escape safely while preventing contaminants from entering the intake manifold. The Dorman brand is synonymous with reliability, offering parts that meet or exceed OEM standards, which means you can trust this breather hose to perform consistently without compromising engine efficiency. Whether you re addressing a leak, upgrading your vehicle s maintenance routine, or preparing for a rebuild, this part is an essential component for keeping your Volkswagen Jetta s engine running smoothly and free from harmful pressure imbalances.

**Pros and Cons of buying a Dorman 40FF964 Engine Crankcase Breather Hose for a 2000 2005 Volkswagen Jetta 1.8L L4**

1. **Compatibility and Fit:** Dorman parts are designed to meet or exceed OEM specifications, ensuring a proper fit for the 1.8L L4 engine in your 2000 2005 Jetta. This reduces the risk of leaks or improper installation, which can lead to oil consumption or contamination.

2. **Quality and Durability:** Dorman is a reputable brand known for using high-quality materials and manufacturing standards. The hose should be more durable than generic or low-cost alternatives, reducing the likelihood of premature failure.

3. **Ease of Installation:** The part is straightforward to install, requiring only basic tools. Since it s a direct replacement for the OEM component, there s no need for modifications or additional parts.

4. **Prevents Oil Leaks and Contamination:** A functioning crankcase breather hose helps regulate pressure in the engine s crankcase, preventing oil from leaking into the intake system (which can cause oil consumption or fouling the air filter) or allowing harmful particles to enter the engine.

5. **Cost-Effective:** While not the cheapest option, it is reasonably priced compared to OEM replacements, offering a balance between affordability and reliability.

6. **Widely Available:** Dorman parts are stocked by most auto parts retailers, both online and in-store, making it easy to purchase without long wait times.

---

1. **Price:** While competitive, the Dorman part may still be more expensive than generic or no-name alternatives. If you re on a tight budget, cheaper options might be tempting, though they may lack the same level of quality or longevity.

2. **Potential for Counterfeit Parts:** Since Dorman is a well-known brand, counterfeit or low-quality knockoffs can sometimes appear in the market, particularly on third-party websites. Always purchase from trusted retailers to avoid this risk.

3. **Mixed Reviews on Longevity:** Some owners report that while the Dorman hose works well initially, it may still fail prematurely if the engine has significant carbon buildup, oil sludge, or other internal issues. In such cases, addressing the root cause (e.g., oil changes, valve cover gasket replacement) may be necessary for long-term reliability.

4. **Installation Challenges:** If the existing hose is corroded or the engine bay is cluttered, installation might require extra effort to remove old debris or secure the new part properly. Improper installation could lead to leaks or reduced effectiveness.

5. **Limited Warranty:** Dorman typically offers a limited warranty (often 12 months or 12,000 miles), which may not cover all potential failure modes, especially if the engine has underlying problems.

---

The Dorman 40FF964 crankcase breather hose is a solid choice for your 2000 2005 Volkswagen Jetta s 1.8L L4 engine. It strikes a balance between quality, compatibility, and ease of installation, making it a reliable upgrade over the OEM part. While it may not be the absolute cheapest option, its durability and performance justify the cost for most drivers.

If you re concerned about long-term reliability, consider pairing this replacement with other maintenance tasks, such as checking the valve cover gasket for leaks or ensuring your engine is running with fresh oil. Always buy from authorized dealers to avoid counterfeit parts.

**Purchase the Dorman 40FF964 crankcase breather hose.** It is the best balance of quality, fit, and value for your application. If you re comfortable with installation, replace it yourself to save labor costs. If you re unsure, consult a mechanic to ensure proper fitting and sealing. Avoid generic hoses unless you re certain they meet the same standards.

Details:

Notes: Y from Valve Cover. Package Contents: 1 Breather Tube. Application Notes: Engine: 1.8LL L4;. Reliable Performance: Engineered to meet or exceed OEM specifications for consistent operation and longevity.Durability: Manufactured using high-quality materials withstand the demands of everyday driving.Easy Installation: designed as direct-fit replacements, requiring minimal effort no special modifications.Wide Availability: Covers a broad range vehicle applications, making it easier find right part your car truck.

Warranty Coverage: 1 Year. Part Type: Engine Crankcase Breather Hose. Material: Eco. Dorman parts are engineered to meet or exceed OEM standards, providing reliable performance, durability, and ease of installation.

Item Specifics Diameter: 0.8 IN.

part #: 40ff964 prices

• $50.07-$84.95

specifications emissyste:

• for models: Jetta
• for makes: Volkswagen
• for years: 2000-2005
• brand: Dorman
• mpn: 40ff964
• part type: Engine Breather Hose
• manufacturer warranty: 1 Year
• compatibility notes: Engine
• notes: Y From Valve Cover
• description: Vacuum Breather
• short description: Breather Tube
• package contents: 1 Breather Tube
• material: Eco
• cs-sku: 328

returns emissyste:

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

shipping emissyste:

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

payments emissyste:

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

seller emissyste:

• # reviews: 136
• city: Bronx, New York
• rating: 99.3%

general emissyste:

• condition: New
• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts

offer emissyste:

• quantity: 1
• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: February 20, 2026

Dorman 40FF964 Is Similar To:

• 310-226 Dorman Oe Solutions Vw Golf Jetta Evaporative Emissions System Leak (26.4% similar) We combine shipping on the same item. If you wish to purchase multiple items please. Inlet outside DIAMETER0. MATERIALPLASTIC length 4. If you live outside of the USA please research and verify it fits your vehicle before purchasing. 77 lbs x w H12. Or for a quick response. golf 2002 VOLKSWAGEN ...(October 28th, 2018)
• 46001 Dorman Help Emission Hose (27.8% similar) To protect product integrity, some parts are not returnable once the packaging has been opened. Dorman - help. Dorman designs packages and markets over different products manufactured to its specifications. About the brand Dorman: Dorman is a leading supplier of original equipment dealer exclusive ...(March 10th, 2018)
• 46014 Dorman Help Emission Hose (27.8% similar) Dorman designs packages and markets over different products manufactured to its specifications. Dorman - help. About the brand Dorman: Dorman is a leading supplier of original equipment dealer exclusive automotive replacement parts hardware and brake fasteners to aftermarket household organizational...(July 20th, 2018)
• 46030 Dorman Emission Hose (27.3% similar) 2 ounces product dimensions: Dorman emission hose product features make sure this fits...(August 6th, 2018)
• 46034 Dorman Help Emission Hose (27.8% similar) Our listing data is received from the manufacturer, when manufacturers perform updates modifications may not be immediately referenced within listings. Cases:please try to resolve any issues directly with us prior opening a case. Dorman designs packages and markets over different products ...(January 27th, 2018)
• 46087 Dorman Pcv Hose For Ford And Other Applicationsford Part (30.1% similar) New unopened PVC hose for ford F150 expedition 4l engine only...(February 16th, 2019)
• 46095 Pcv Valve Hose Fits Dorman Help (34.7% similar) Year make model 2002 Mercedes-Benz C240...(October 24th, 2018)
• 46100 Dorman New Pcv Valve Hose Crankcase Vent 885484443754 (37.8% similar) PVC breather hose hose material: rubber. Shipping labels may only be applied to a separate, outer box. Vehicles sold outside of the USA may be different, even if they have same make and model name...(May 14th, 2018)
• 46832 Pcv Valve Hose Fits Ford Super Duty Dorman Help (32.1% similar) Hose end 2 inside diameter in. Year make model 2004 ford F-250 super duty. Package CONTENTS1 hose 1 clip shape irregular wall THICKNESS0...(October 24th, 2018)
• 55117 Dorman Secondary Air Injection Pipe For Gm Engines (21.4% similar) Dorman secondary air injection pipe for gm 1l engines...(April 22nd, 2018)
• 555-005 Engine Expansion Plug Fits Gmc Sprint Dorman Autograde 019495555056 (22.6% similar) Year make model 1975 GMC sprint...(July 18th, 2018)