FEL-PRO
Cylinder Head Ext
$82.05
FEL-PRO
Part # 521 SD
4.7(47 reviews)Cylinder Head Ext
Fits Dodge, Chrysler, Fargo — 1,205 vehicle applications
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Contact us at 1-866-461-2787 for pricing
Only 2 left in stock
Contact us at 1-866-461-2787 for pricing
Call for PriceFree ShippingOrders $99+
WarrantyManufacturer backed
Easy Returns30-day policy
Canadian OwnedShipped across Canada
Will this fit your vehicle?
Select your vehicle to check fitment.
FEL-PRO 521 SD Vehicle Fitment
Fits 1,205 vehiclesThis Cylinder Head Ext fits Dodge, Chrysler, Fargo vehicles.
1981-1992 Dodge B250
1981-1992 Dodge B350
1981-1992 Dodge D250
1981-1992 Dodge D350
1981-1992 Dodge W250
1981-1992 Dodge W350
1981-1990 Dodge B150
1978-1981 Dodge D400
1978-1981 Dodge D450
1978-1980 Dodge RD200
1977-1991 Dodge D150
1977-1991 Dodge W150
1976-1980 Dodge Aspen
1975-1989 Dodge D100
1975-1989 Dodge W100
1975-1980 Dodge B100
1975-1980 Dodge B200
1975-1980 Dodge B300
1975-1980 Dodge D200
1975-1980 Dodge D300
1975-1980 Dodge W200
1975-1980 Dodge W300
1974 Dodge M350
1974 Dodge RM350
1973-1974 Dodge RM300
1972-1974 Dodge R300
1971-1974 Dodge B100 Van
1971 Dodge B200 Van
1970-1974 Dodge MB300
1968-1974 Dodge M300
1966-1973 Dodge Polara
1964-1970 Dodge A100 Truck
1964-1970 Dodge A100
FEL-PRO 521 SD Specifications
- Cylinder Bore Diameter
- 4.180
- Gasket Sealant Included
- No
- Grade Type
- Premium
- Head Gasket Bore
- 4.18
- Head Gasket Manufactured Thickness
- .0499" - .0599"
- Material
- PermaTorque Severe Duty
FEL-PRO 521 SD Interchange Numbers
This part replaces and is compatible with the following part numbers
Interchange Numbers
611061500(Victor Reinz)
FEL-PRO 521 SD Product Description
FEL-PRO 521 SD Severe Duty Moteur – Joint de culasse pour Dodge D150
Key Features
- DESIGNED FOR THE TOUGHEST CONDITIONS -- Engineered for hardworking vehicles that operate in severe conditions
- STRONG AND DURABLE -- Severe duty steel core gaskets designed slightly thicker to accommodate for machined surfaces
- PREMIUM MATERIALS -- High-grade stainless armor enhances strength and corrosion resistance while proprietary coatings enhance sealing and anti-stick properties
- SUPERIOR SEAL -- Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
- DESIGNED FOR IMPERFECT SEALING SURFACES -- Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
- DISEÑADO PARA LAS CONDICIONES MAS DIFÍCILES – Diseñado para vehículos trabajadores que operan en condiciones severas.
- FUERTE Y DURADERO – Juntas de núcleo de acero para uso severo diseñadas ligeramente más gruesas para adaptarse a superficies maquinadas.
- MATERIALES PREMIUM – La armadura de acero inoxidable de alto grado mejora la fuerza y resistencia a la corrosión al mismo tiempo que los recubrimientos patentados mejoran el sellado y las propiedades antiadherentes
- SELLO SUPERIOR – Adhesivo de sellado Printoseal con estampado preciso en todas las áreas vitales para eliminar las rutas de fuga
- DISEÑADO PARA SUPERFICIES DE SELLADO IMPERFECTAS – Diseñado y fabricado específicamente para el entorno de reparación para ayudar a sellar superficies de sellado imperfectas.
- CONÇU POUR LES CONDITIONS LES PLUS DIFFICILES — Conçu pour les véhicules qui travaillent dur et qui fonctionnent dans des conditions sévères
- SOLIDE ET DURABLE — Joints d’étanchéité en acier de service solides conçus légèrement plus épais pour s’adapter aux surfaces usinées
- MATÉRIAUX PREMIUM — Les armures inoxydables de haute qualité renforcent la résistance à la corrosion, tandis que les revêtements exclusifs améliorent les propriétés d’étanchéité et d’antiadhésif
- JOINT SUPÉRIEUR — Joncs d’étanchéité sur bague aérosol Printoseal en relief précis dans toutes les zones vitales pour éliminer les voies de fuite
- CONÇU POUR DES SURFACES D’ÉTANCHÉITÉ IMPARFAITES — Conçu et fabriqué spécifiquement pour l’environnement de réparation pour aider à sceller les surfaces d’étanchéité imparfaite
Las juntas Fel-Pro ofrecen un sellado de vehículos al 100 % con materiales específicos a la aplicación para brindarle soluciones de sellado con el desempeño y durabilidad que confían los profesionales.
About FEL-PRO
Shop FEL-PRO Engine Cylinder Head Gasket at Autrex with vehicle fitment details, current pricing, and checkout options for the FEL-PRO 521 SD. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Ratings & Reviews
4.7out of 5
Based on 47 reviews
- 538
- 46
- 31
- 21
- 11
- Direct fit, no surprisesMarc D.Verified BuyerMay 28, 2026
Lined up perfectly with the original. Install took about an hour with the right press. Solid feel back in the steering, no more clunk over bumps.
Installed on 2016 Ram 1500
- Shipped fast across CanadaJen P.Verified BuyerMay 14, 2026
Ordered on a Monday, had it by Wednesday in Calgary. Greasable fitting is a nice touch. Quality looks on par with OEM.
Installed on 2014 Chevrolet Silverado 1500
- Good part, double-check your sideSteve R.Verified BuyerApr 30, 2026
Works great so far. Just confirm fitment for your exact trim before ordering — the fitment list on the page was accurate for mine.
Installed on 2017 Ford F-150
- Quiet againAmrit S.Verified BuyerApr 19, 2026
Replaced both sides at the same time. The knocking noise is completely gone. Boot quality feels durable.
Installed on 2015 GMC Sierra 1500
- Would buy againDaniel L.Mar 22, 2026
Second one I've bought from Autrex. Packaging was secure and the part matched the photos exactly.
Installed on 2013 Dodge Durango
Frequently Asked Questions — FEL-PRO 521 SD
What vehicles does the FEL-PRO 521 SD fit?
The FEL-PRO 521 SD fits 50 vehicle applications including 1981-1992 Dodge B250, 1981-1992 Dodge B350, 1981-1992 Dodge D250, 1981-1992 Dodge D350, 1981-1992 Dodge W250 and 45 more. Check the full fitment list above to confirm your vehicle.
What parts does the FEL-PRO 521 SD replace?
The FEL-PRO 521 SD is a direct replacement for Victor Reinz 611061500. See the full interchange list for all compatible replacements.
What are the shipping options for the FEL-PRO 521 SD?
Shipping options for the FEL-PRO 521 SD are shown during checkout and may vary by item, address, and availability. Eligible orders over $99 may qualify for free shipping, with some exceptions. Call 1-866-461-2787 if you need help confirming shipping or pickup before ordering.
What is the price of the FEL-PRO 521 SD?
For current pricing on the FEL-PRO 521 SD, please call us at 1-866-461-2787. Availability and final order details are confirmed before checkout is completed.
Is the Cylinder Head Ext a direct fit replacement?
Yes, the Cylinder Head Ext by FEL-PRO is designed as a direct fit replacement. Use our vehicle selector to confirm compatibility with your specific vehicle.
What warranty does the Cylinder Head Ext come with?
The Cylinder Head Ext comes with the standard FEL-PRO manufacturer warranty. Please check the product specifications for exact warranty terms.
